Vulnerabilites related to thekelleys - dnsmasq
Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
dnsmasq before 2.78, when configured as a relay, allows remote attackers to obtain sensitive memory information via vectors involving handling DHCPv6 forwarded requests.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| novell | leap | 42.2 | |
| novell | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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Vulnerability from fkie_nvd
Published
2021-01-20 16:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * |
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"id": "CVE-2020-25684",
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},
{
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"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/12135-security-advisory-61"
},
{
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"url": "https://www.debian.org/security/2021/dsa-4844"
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{
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"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
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{
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},
{
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"tags": [
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{
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"tags": [
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],
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"vulnStatus": "Modified",
"weaknesses": [
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{
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"value": "CWE-358"
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],
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"type": "Secondary"
},
{
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{
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"value": "NVD-CWE-Other"
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],
"source": "nvd@nist.gov",
"type": "Primary"
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}
Vulnerability from fkie_nvd
Published
2016-06-30 17:59
Modified
2025-04-12 10:46
Severity ?
Summary
Dnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 15.10 | |
| canonical | ubuntu_linux | 16.04 | |
| thekelleys | dnsmasq | * |
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}
],
"id": "CVE-2015-8899",
"lastModified": "2025-04-12T10:46:40.837",
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"published": "2016-06-30T17:59:00.157",
"references": [
{
"source": "security@ubuntu.com",
"url": "http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010479.html"
},
{
"source": "security@ubuntu.com",
"url": "http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010505.html"
},
{
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"url": "http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=41a8d9e99be9f2cc8b02051dd322cb45e0faac87"
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{
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"url": "http://www.openwall.com/lists/oss-security/2016/06/03/7"
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{
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"url": "http://www.openwall.com/lists/oss-security/2016/06/04/2"
},
{
"source": "security@ubuntu.com",
"url": "http://www.securityfocus.com/bid/91031"
},
{
"source": "security@ubuntu.com",
"url": "http://www.securitytracker.com/id/1036045"
},
{
"source": "security@ubuntu.com",
"url": "http://www.ubuntu.com/usn/USN-3009-1"
},
{
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"url": "http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010479.html"
},
{
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"url": "http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010505.html"
},
{
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"url": "http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=41a8d9e99be9f2cc8b02051dd322cb45e0faac87"
},
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"url": "http://www.openwall.com/lists/oss-security/2016/06/03/7"
},
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"url": "http://www.openwall.com/lists/oss-security/2016/06/04/2"
},
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"url": "http://www.securityfocus.com/bid/91031"
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"url": "http://www.ubuntu.com/usn/USN-3009-1"
}
],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Deferred",
"weaknesses": [
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"description": [
{
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"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2024-06-06 22:15
Modified
2025-03-14 16:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
dnsmasq 2.9 is vulnerable to Integer Overflow via forward_query.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.9 |
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{
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"value": "dnsmasq 2.9 es vulnerable al desbordamiento de enteros a trav\u00e9s de forward_query."
}
],
"id": "CVE-2023-49441",
"lastModified": "2025-03-14T16:15:27.890",
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"type": "Secondary"
}
]
},
"published": "2024-06-06T22:15:09.843",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Mailing List"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2023q4/017332.html"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=65c2d6afd67a032f45f40d7e4d620f5d73e5f07d"
},
{
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"tags": [
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"Mailing List"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2023q4/017332.html"
},
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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{
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"value": "CWE-190"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
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"lang": "en",
"value": "CWE-190"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
Vulnerability from fkie_nvd
Published
2021-01-20 16:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 |
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"versionEndExcluding": "2.83",
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},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en dnsmasq versiones anteriores a 2.83.\u0026#xa0;Se detect\u00f3 un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria en dnsmasq cuando DNSSEC est\u00e1 habilitado y antes de comprobar las entradas DNS recibidas.\u0026#xa0;Un atacante remoto, que puede crear respuestas DNS v\u00e1lidas, podr\u00eda usar este fallo para causar un desbordamiento en una memoria asignada de la pila.\u0026#xa0;Este fallo es causado por una falta de comprobaci\u00f3n de longitud en rfc1035.c:extract_name(), que podr\u00eda ser abusado para causar que el c\u00f3digo ejecute memcpy() con un tama\u00f1o negativo en get_rdata() y causar un bloqueo en dnsmasq, lo que resultar\u00eda en una denegaci\u00f3n de servicio.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
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],
"id": "CVE-2020-25683",
"lastModified": "2024-11-21T05:18:27.400",
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"published": "2021-01-20T16:15:14.087",
"references": [
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"tags": [
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"Patch",
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],
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},
{
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{
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{
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{
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},
{
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{
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},
{
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"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
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Vulnerability from fkie_nvd
Published
2022-08-29 15:15
Modified
2025-06-10 14:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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Vulnerability from fkie_nvd
Published
2009-09-02 15:30
Modified
2025-04-09 00:30
Severity ?
Summary
Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet, as demonstrated by a read (aka RRQ) request.
References
Impacted products
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},
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}
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{
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Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from answer_auth and FuzzAuth). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| fedoraproject | fedora | 27 | |
| novell | leap | 42.2 | |
| novell | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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Vulnerability from fkie_nvd
Published
2021-01-20 16:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it accepted by dnsmasq. This is in contrast with RFC5452, which specifies that the query name is one of the attributes of a query that must be used to match a reply. This flaw could be abused to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 10.0 | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * |
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Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from hash_questions and fuzz_util.c). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge." However, a contributor states that a security patch (mentioned in 016162.html) is needed
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"
},
{
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"tags": [
"Mailing List",
"Third Party Advisory"
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"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
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],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2023-03-15 21:15
Modified
2025-02-26 22:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * |
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"url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=blob%3Bf=CHANGELOG"
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"url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5"
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Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| novell | leap | 42.2 | |
| novell | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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"lastModified": "2025-04-20T01:37:25.860",
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{
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},
{
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},
{
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},
{
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},
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},
{
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},
{
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"url": "https://access.redhat.com/security/vulnerabilities/3199382"
},
{
"source": "cve@mitre.org",
"url": "https://security.gentoo.org/glsa/201710-27"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://www.exploit-db.com/exploits/42942/"
},
{
"source": "cve@mitre.org",
"tags": [
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"US Government Resource"
],
"url": "https://www.kb.cert.org/vuls/id/973527"
},
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"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html"
},
{
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"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html"
},
{
"source": "cve@mitre.org",
"url": "https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq"
},
{
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},
{
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"url": "http://nvidia.custhelp.com/app/answers/detail/a_id/4561"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "http://thekelleys.org.uk/dnsmasq/CHANGELOG"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=24036ea507862c7b7898b68289c8130f85599c10"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.debian.org/security/2017/dsa-3989"
},
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"tags": [
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},
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"tags": [
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"url": "http://www.securitytracker.com/id/1039474"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3430-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.ubuntu.com/usn/USN-3430-2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Third Party Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2017:2836"
},
{
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"tags": [
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],
"url": "https://access.redhat.com/errata/RHSA-2017:2837"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Third Party Advisory"
],
"url": "https://access.redhat.com/security/vulnerabilities/3199382"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201710-27"
},
{
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"tags": [
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],
"url": "https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html"
},
{
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"tags": [
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],
"url": "https://www.exploit-db.com/exploits/42942/"
},
{
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"tags": [
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],
"url": "https://www.kb.cert.org/vuls/id/973527"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html"
},
{
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"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
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{
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],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service (memory consumption) via vectors involving DNS response creation.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| novell | leap | 42.2 | |
| novell | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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{
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"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf"
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"url": "https://security.gentoo.org/glsa/201710-27"
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{
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"url": "https://www.kb.cert.org/vuls/id/973527"
},
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"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html"
},
{
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"url": "https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html"
},
{
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"url": "https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq"
},
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{
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"url": "https://security.gentoo.org/glsa/201710-27"
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"vulnStatus": "Deferred",
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}
Vulnerability from fkie_nvd
Published
2019-08-01 21:15
Modified
2024-11-21 04:26
Severity ?
Summary
Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491.
References
| ▶ | URL | Tags | |
|---|---|---|---|
| cve@mitre.org | https://github.com/Slovejoy/dnsmasq-pre2.76 | Exploit, Third Party Advisory | |
| cve@mitre.org | https://lists.debian.org/debian-lts-announce/2019/09/msg00013.html | Mailing List, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/Slovejoy/dnsmasq-pre2.76 | Exploit, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.debian.org/debian-lts-announce/2019/09/msg00013.html | Mailing List, Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| debian | debian_linux | 8.0 |
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},
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"lang": "es",
"value": "La comprobaci\u00f3n incorrecta de l\u00edmites en Dnsmasq anterior de la versi\u00f3n 2.76 permite que un servidor DNS controlado por el atacante env\u00ede paquetes DNS grandes que resultan en una operaci\u00f3n de lectura m\u00e1s all\u00e1 del b\u00fafer asignado para el paquete, una vulnerabilidad diferente a CVE-2017-14491."
}
],
"id": "CVE-2019-14513",
"lastModified": "2024-11-21T04:26:52.837",
"metrics": {
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"references": [
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"tags": [
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},
{
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"tags": [
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},
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},
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],
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"weaknesses": [
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}
]
}
Vulnerability from fkie_nvd
Published
2005-05-02 04:00
Modified
2025-04-03 01:03
Severity ?
Summary
Dnsmasq before 2.21 allows remote attackers to poison the DNS cache via answers to queries that were not made by Dnsmasq.
References
| ▶ | URL | Tags | |
|---|---|---|---|
| cve@mitre.org | http://secunia.com/advisories/14691 | Broken Link, Patch, Vendor Advisory | |
| cve@mitre.org | http://www.securityfocus.com/bid/12897 | Broken Link, Patch, Third Party Advisory, VDB Entry | |
| cve@mitre.org | http://www.thekelleys.org.uk/dnsmasq/CHANGELOG | Release Notes | |
| cve@mitre.org | https://exchange.xforce.ibmcloud.com/vulnerabilities/19826 | Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | http://secunia.com/advisories/14691 | Broken Link, Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.securityfocus.com/bid/12897 | Broken Link, Patch, Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.thekelleys.org.uk/dnsmasq/CHANGELOG | Release Notes | |
| af854a3a-2127-422b-91ae-364da2661108 | https://exchange.xforce.ibmcloud.com/vulnerabilities/19826 | Third Party Advisory, VDB Entry |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * |
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],
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"lastModified": "2025-04-03T01:03:51.193",
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]
},
"published": "2005-05-02T04:00:00.000",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Broken Link",
"Patch",
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/14691"
},
{
"source": "cve@mitre.org",
"tags": [
"Broken Link",
"Patch",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/12897"
},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes"
],
"url": "http://www.thekelleys.org.uk/dnsmasq/CHANGELOG"
},
{
"source": "cve@mitre.org",
"tags": [
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"VDB Entry"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/19826"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link",
"Patch",
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/14691"
},
{
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"tags": [
"Broken Link",
"Patch",
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
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},
{
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"tags": [
"Third Party Advisory",
"VDB Entry"
],
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}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
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"value": "CWE-346"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2013-03-05 21:38
Modified
2025-04-11 00:51
Severity ?
Summary
Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via spoofed TCP based DNS queries. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3411.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * |
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}
],
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"lastModified": "2025-04-11T00:51:21.963",
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"tags": [
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},
{
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],
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"vulnStatus": "Deferred",
"weaknesses": [
{
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{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2013-03-05 21:38
Modified
2025-04-11 00:51
Severity ?
Summary
Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed DNS query.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| redhat | enterprise_linux_desktop | 6.0 | |
| redhat | enterprise_linux_server | 6.0 | |
| redhat | enterprise_linux_workstation | 6.0 |
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{
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}
Vulnerability from fkie_nvd
Published
2017-10-04 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2021-01-20 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 |
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Vulnerability from fkie_nvd
Published
2021-01-20 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory, possibly executing code on the machine. The flaw is in the rfc1035.c:extract_name() function, which writes data to the memory pointed by name assuming MAXDNAME*2 bytes are available in the buffer. However, in some code execution paths, it is possible extract_name() gets passed an offset from the base buffer, thus reducing, in practice, the number of available bytes that can be written in the buffer. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 |
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"source": "secalert@redhat.com",
"tags": [
"Third Party Advisory"
],
"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1882014"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202101-17"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://www.debian.org/security/2021/dsa-4844"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-122"
}
],
"source": "secalert@redhat.com",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
}
Vulnerability from fkie_nvd
Published
2015-05-08 14:59
Modified
2025-04-12 10:46
Severity ?
Summary
The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| oracle | solaris | 11.2 |
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"versionEndIncluding": "2.73",
"vulnerable": true
}
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"operator": "OR"
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},
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"value": "La funci\u00f3n tcp_request en Dnsmasq anterior a 2.73rc4 no maneja correctamente el valor de retorno de la funci\u00f3n setup_reply, lo que permite a atacantes remotos leer la memoria de procesos y causar una denegaci\u00f3n de servicio (lectura fuera de rango y ca\u00edda) a trav\u00e9s de una solicitud DNS malformada."
}
],
"id": "CVE-2015-3294",
"lastModified": "2025-04-12T10:46:40.837",
"metrics": {
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"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-updates/2015-05/msg00013.html"
},
{
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},
{
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"tags": [
"Third Party Advisory"
],
"url": "http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q2/009387.html"
},
{
"source": "cve@mitre.org",
"url": "http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=ad4a8ff7d9097008d7623df8543df435bfddeac8"
},
{
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"tags": [
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"url": "http://www.debian.org/security/2015/dsa-3251"
},
{
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],
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/archive/1/535354/100/1100/threaded"
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{
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{
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"url": "http://www.securitytracker.com/id/1032195"
},
{
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"tags": [
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"url": "http://www.ubuntu.com/usn/USN-2593-1"
},
{
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"url": "https://security.gentoo.org/glsa/201512-01"
},
{
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"url": "http://lists.opensuse.org/opensuse-updates/2015-05/msg00013.html"
},
{
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"tags": [
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"url": "http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=ad4a8ff7d9097008d7623df8543df435bfddeac8"
},
{
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"tags": [
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"url": "http://www.debian.org/security/2015/dsa-3251"
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{
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"tags": [
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{
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"url": "http://www.securityfocus.com/archive/1/535354/100/1100/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/74452"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id/1032195"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/201512-01"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-19"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2008-07-18 16:41
Modified
2025-04-09 00:30
Severity ?
Summary
dnsmasq 2.25 allows remote attackers to cause a denial of service (daemon crash) by (1) renewing a nonexistent lease or (2) sending a DHCPREQUEST for an IP address that is not in the same network, related to the DHCP NAK response from the daemon.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.25 |
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],
"negate": false,
"operator": "OR"
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"cveTags": [],
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},
{
"lang": "es",
"value": "dnsmasq versi\u00f3n 2.25, permite a los atacantes remotos causar una denegaci\u00f3n de servicio (bloqueo del demonio) al (1) renovar una concesi\u00f3n inexistente o (2) enviar un DHCPREQUEST para una direcci\u00f3n IP que no est\u00e1 en la misma red, relacionada con la respuesta NAK DHCP del demonio."
}
],
"id": "CVE-2008-3214",
"lastModified": "2025-04-09T00:30:58.490",
"metrics": {
"cvssMetricV2": [
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"acInsufInfo": false,
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"published": "2008-07-18T16:41:00.000",
"references": [
{
"source": "cve@mitre.org",
"url": "http://freshmeat.net/projects/dnsmasq/?branch_id=1991\u0026release_id=217681"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2008/06/30/7"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2008/07/01/8"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2008/07/02/4"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2008/07/03/4"
},
{
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"url": "http://www.openwall.com/lists/oss-security/2008/07/08/8"
},
{
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"tags": [
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],
"url": "http://www.openwall.com/lists/oss-security/2008/07/12/3"
},
{
"source": "cve@mitre.org",
"url": "http://www.thekelleys.org.uk/dnsmasq/CHANGELOG"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/47438"
},
{
"source": "cve@mitre.org",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43929"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://freshmeat.net/projects/dnsmasq/?branch_id=1991\u0026release_id=217681"
},
{
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"url": "http://www.openwall.com/lists/oss-security/2008/06/30/7"
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"url": "http://www.openwall.com/lists/oss-security/2008/07/01/8"
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"url": "http://www.openwall.com/lists/oss-security/2008/07/02/4"
},
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"url": "http://www.openwall.com/lists/oss-security/2008/07/03/4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2008/07/08/8"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "http://www.openwall.com/lists/oss-security/2008/07/12/3"
},
{
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"url": "http://www.thekelleys.org.uk/dnsmasq/CHANGELOG"
},
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/47438"
},
{
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"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43929"
}
],
"sourceIdentifier": "cve@mitre.org",
"vendorComments": [
{
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"organization": "Red Hat"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
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"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| opensuse | leap | 42.2 | |
| opensuse | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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},
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"versionEndIncluding": "2.77",
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}
],
"id": "CVE-2017-14493",
"lastModified": "2025-04-20T01:37:25.860",
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"published": "2017-10-03T01:29:02.077",
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},
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},
{
"source": "cve@mitre.org",
"url": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt"
},
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{
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"url": "https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html"
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},
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},
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},
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Vulnerability from fkie_nvd
Published
2021-01-20 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 10.0 | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * |
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}
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}
],
"source": "nvd@nist.gov",
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}
Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in print_mac (called from log_packet and dhcp_reply). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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Vulnerability from fkie_nvd
Published
2020-01-07 17:15
Modified
2024-11-21 04:27
Severity ?
Summary
A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 31 |
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Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard and FuzzCheckForBogusWildcard). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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Vulnerability from fkie_nvd
Published
2021-04-08 23:15
Modified
2024-11-21 06:21
Severity ?
Summary
A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| redhat | enterprise_linux | 8.0 | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| fedoraproject | fedora | 34 | |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | 1.9.0 |
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Vulnerability from fkie_nvd
Published
2009-09-02 15:30
Modified
2025-04-09 00:30
Severity ?
Summary
The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.
References
Impacted products
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],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option."
},
{
"lang": "es",
"value": "La funci\u00f3n tftp_request en tftp.c en dnsmasq en versiones anteriores a la 2.50, cuando se usa --enable-tftp, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (referencia a un puntero nulo y ca\u00edda del demonio) mediante una petici\u00f3n de lectura TFTP (alias RRQ) con una opci\u00f3n blksize malformada."
}
],
"id": "CVE-2009-2958",
"lastModified": "2025-04-09T00:30:58.490",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-09-02T15:30:01.467",
"references": [
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/36563"
},
{
"source": "cve@mitre.org",
"url": "http://www.coresecurity.com/content/dnsmasq-vulnerabilities"
},
{
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"url": "http://www.redhat.com/support/errata/RHSA-2009-1238.html"
},
{
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"url": "http://www.securityfocus.com/bid/36120"
},
{
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"url": "http://www.thekelleys.org.uk/dnsmasq/CHANGELOG"
},
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{
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{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816"
},
{
"source": "cve@mitre.org",
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{
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Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.c). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
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Vulnerability from fkie_nvd
Published
2021-01-20 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 |
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Vulnerability from fkie_nvd
Published
2024-02-14 16:15
Modified
2025-05-12 15:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | enterprise_linux | 6.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| microsoft | windows_server_2008 | r2 | |
| microsoft | windows_server_2012 | - | |
| microsoft | windows_server_2012 | r2 | |
| microsoft | windows_server_2016 | - | |
| microsoft | windows_server_2019 | - | |
| microsoft | windows_server_2022 | - | |
| microsoft | windows_server_2022_23h2 | - | |
| fedoraproject | fedora | 39 | |
| thekelleys | dnsmasq | * | |
| nic | knot_resolver | * | |
| powerdns | recursor | * | |
| powerdns | recursor | * | |
| powerdns | recursor | * | |
| isc | bind | * | |
| isc | bind | * | |
| isc | bind | * | |
| nlnetlabs | unbound | * |
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"versionEndExcluding": "1.19.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records."
},
{
"lang": "es",
"value": "Ciertos aspectos DNSSEC del protocolo DNS (en RFC 4035 y RFC relacionados) permiten a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU) a trav\u00e9s de una o m\u00e1s respuestas DNSSEC cuando hay una zona con muchos registros DNSKEY y RRSIG, tambi\u00e9n conocido como \"KeyTrap\". \" asunto. La especificaci\u00f3n del protocolo implica que un algoritmo debe evaluar todas las combinaciones de registros DNSKEY y RRSIG."
}
],
"id": "CVE-2023-50387",
"lastModified": "2025-05-12T15:15:56.673",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2024-02-14T16:15:45.300",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "http://www.openwall.com/lists/oss-security/2024/02/16/2"
},
{
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"tags": [
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"url": "http://www.openwall.com/lists/oss-security/2024/02/16/3"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://access.redhat.com/security/cve/CVE-2023-50387"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking"
],
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1219823"
},
{
"source": "cve@mitre.org",
"tags": [
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],
"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html"
},
{
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"tags": [
"Patch"
],
"url": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1"
},
{
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"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://kb.isc.org/docs/cve-2023-50387"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/"
},
{
"source": "cve@mitre.org",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://news.ycombinator.com/item?id=39367411"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking"
],
"url": "https://news.ycombinator.com/item?id=39372384"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/"
},
{
"source": "cve@mitre.org",
"url": "https://security.netapp.com/advisory/ntap-20240307-0007/"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.athene-center.de/aktuelles/key-trap"
},
{
"source": "cve@mitre.org",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.isc.org/blogs/2024-bind-security-release/"
},
{
"source": "cve@mitre.org",
"tags": [
"Press/Media Coverage",
"Third Party Advisory"
],
"url": "https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://www.openwall.com/lists/oss-security/2024/02/16/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://www.openwall.com/lists/oss-security/2024/02/16/3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://access.redhat.com/security/cve/CVE-2023-50387"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking"
],
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1219823"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html"
},
{
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],
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},
{
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],
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},
{
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"url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html"
},
{
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"url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/"
},
{
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},
{
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},
{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/"
},
{
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"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/"
},
{
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://news.ycombinator.com/item?id=39367411"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking"
],
"url": "https://news.ycombinator.com/item?id=39372384"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20240307-0007/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.athene-center.de/aktuelles/key-trap"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.isc.org/blogs/2024-bind-security-release/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Press/Media Coverage",
"Third Party Advisory"
],
"url": "https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
Vulnerability from fkie_nvd
Published
2022-01-01 00:15
Modified
2024-11-21 06:33
Severity ?
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in dhcp_reply (called from dhcp_packet and FuzzDhcp). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | 2.86 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*",
"matchCriteriaId": "8F823B95-CBE5-4597-9DEE-8E9B833940A7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [
{
"sourceIdentifier": "cve@mitre.org",
"tags": [
"disputed"
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Dnsmasq 2.86 has a heap-based buffer overflow in dhcp_reply (called from dhcp_packet and FuzzDhcp). NOTE: the vendor\u0027s position is that CVE-2021-45951 through CVE-2021-45957 \"do not represent real vulnerabilities, to the best of our knowledge."
},
{
"lang": "es",
"value": "** EN DISPUTA ** Dnsmasq versi\u00f3n 2.86, presenta un desbordamiento de buffer en la regi\u00f3n heap de la memoria en la funci\u00f3n dhcp_reply (llamado desde dhcp_packet y FuzzDhcp). NOTA: la posici\u00f3n del proveedor es que CVE-2021-45951 a CVE-2021-45957 \"no representan vulnerabilidades reales, seg\u00fan nuestro conocimiento\""
}
],
"id": "CVE-2021-45952",
"lastModified": "2024-11-21T06:33:20.920",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2022-01-01T00:15:08.553",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35870"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-927.yaml"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35870"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-927.yaml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2018-01-23 16:29
Modified
2024-11-21 03:14
Severity ?
Summary
A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| thekelleys | dnsmasq | * |
{
"configurations": [
{
"nodes": [
{
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Vulnerability from fkie_nvd
Published
2017-10-03 01:29
Modified
2025-04-20 01:37
Severity ?
Summary
Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.04 | |
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 7.1 | |
| debian | debian_linux | 9.0 | |
| android | 4.4.4 | ||
| android | 5.0.2 | ||
| android | 5.1.1 | ||
| android | 6.0 | ||
| android | 6.0.1 | ||
| android | 7.0 | ||
| android | 7.1.1 | ||
| android | 7.1.2 | ||
| android | 8.0 | ||
| novell | leap | 42.2 | |
| novell | leap | 42.3 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| thekelleys | dnsmasq | * |
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CVE-2017-14496 (GCVE-0-2017-14496)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.
References
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CVE-2015-8899 (GCVE-0-2015-8899)
Vulnerability from cvelistv5
Published
2016-06-30 17:00
Modified
2024-08-06 08:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
References
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CVE-2021-45953 (GCVE-0-2021-45953)
Vulnerability from cvelistv5
Published
2021-12-31 23:52
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from hash_questions and fuzz_util.c). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
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CVE-2021-45956 (GCVE-0-2021-45956)
Vulnerability from cvelistv5
Published
2021-12-31 23:53
Modified
2024-10-28 20:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in print_mac (called from log_packet and dhcp_reply). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
| ► | URL | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2012-3411 (GCVE-0-2012-3411)
Vulnerability from cvelistv5
Published
2013-03-04 21:00
Modified
2024-08-06 20:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed DNS query.
References
| ► | URL | Tags | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2017-14492 (GCVE-0-2017-14492)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.
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CVE-2020-25682 (GCVE-0-2020-25682)
Vulnerability from cvelistv5
Published
2021-01-20 16:28
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory, possibly executing code on the machine. The flaw is in the rfc1035.c:extract_name() function, which writes data to the memory pointed by name assuming MAXDNAME*2 bytes are available in the buffer. However, in some code execution paths, it is possible extract_name() gets passed an offset from the base buffer, thus reducing, in practice, the number of available bytes that can be written in the buffer. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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CVE-2020-25683 (GCVE-0-2020-25683)
Vulnerability from cvelistv5
Published
2021-01-20 15:25
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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CVE-2023-50387 (GCVE-0-2023-50387)
Vulnerability from cvelistv5
Published
2024-02-14 00:00
Modified
2025-05-12 15:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2008-3214 (GCVE-0-2008-3214)
Vulnerability from cvelistv5
Published
2008-07-18 16:00
Modified
2024-08-07 09:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
dnsmasq 2.25 allows remote attackers to cause a denial of service (daemon crash) by (1) renewing a nonexistent lease or (2) sending a DHCPREQUEST for an IP address that is not in the same network, related to the DHCP NAK response from the daemon.
References
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CVE-2020-25684 (GCVE-0-2020-25684)
Vulnerability from cvelistv5
Published
2021-01-20 15:22
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
References
| ► | URL | Tags | ||||||||||||||||||||||||
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CVE-2020-25687 (GCVE-0-2020-25687)
Vulnerability from cvelistv5
Published
2021-01-20 16:31
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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CVE-2021-45957 (GCVE-0-2021-45957)
Vulnerability from cvelistv5
Published
2021-12-31 23:53
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.c). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
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CVE-2005-0877 (GCVE-0-2005-0877)
Vulnerability from cvelistv5
Published
2005-03-26 05:00
Modified
2024-08-07 21:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq before 2.21 allows remote attackers to poison the DNS cache via answers to queries that were not made by Dnsmasq.
References
| ► | URL | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2017-15107 (GCVE-0-2017-15107)
Vulnerability from cvelistv5
Published
2018-01-23 16:00
Modified
2024-08-05 19:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
References
| ► | URL | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Simon Kelley | dnsmasq |
Version: up to and including 2.78 |
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CVE-2020-25681 (GCVE-0-2020-25681)
Vulnerability from cvelistv5
Published
2021-01-20 16:36
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| ► | URL | Tags | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2017-14493 (GCVE-0-2017-14493)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2009-2958 (GCVE-0-2009-2958)
Vulnerability from cvelistv5
Published
2009-09-02 15:00
Modified
2024-08-07 06:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.
References
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CVE-2023-49441 (GCVE-0-2023-49441)
Vulnerability from cvelistv5
Published
2024-06-06 21:20
Modified
2025-03-14 15:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
dnsmasq 2.9 is vulnerable to Integer Overflow via forward_query.
References
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CVE-2015-3294 (GCVE-0-2015-3294)
Vulnerability from cvelistv5
Published
2015-05-08 14:00
Modified
2024-08-06 05:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.
References
| ► | URL | Tags | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2017-13704 (GCVE-0-2017-13704)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
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CVE-2023-28450 (GCVE-0-2023-28450)
Vulnerability from cvelistv5
Published
2023-03-15 00:00
Modified
2025-02-26 21:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.
References
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CVE-2022-0934 (GCVE-0-2022-0934)
Vulnerability from cvelistv5
Published
2022-08-29 14:03
Modified
2025-06-10 13:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - - Use After Free
Summary
A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.
References
| ► | URL | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-14513 (GCVE-0-2019-14513)
Vulnerability from cvelistv5
Published
2019-08-01 20:47
Modified
2024-08-05 00:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491.
References
| ► | URL | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-14834 (GCVE-0-2019-14834)
Vulnerability from cvelistv5
Published
2020-01-07 16:30
Modified
2024-08-05 00:26
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.
References
| ► | URL | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Dnsmasq Project | dnsmasq |
Version: before 2.81 |
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CVE-2017-14494 (GCVE-0-2017-14494)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
dnsmasq before 2.78, when configured as a relay, allows remote attackers to obtain sensitive memory information via vectors involving handling DHCPv6 forwarded requests.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2021-45954 (GCVE-0-2021-45954)
Vulnerability from cvelistv5
Published
2021-12-31 23:53
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from answer_auth and FuzzAuth). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
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CVE-2021-3448 (GCVE-0-2021-3448)
Vulnerability from cvelistv5
Published
2021-04-08 22:06
Modified
2024-08-03 16:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.
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CVE-2020-25685 (GCVE-0-2020-25685)
Vulnerability from cvelistv5
Published
2021-01-20 00:00
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it accepted by dnsmasq. This is in contrast with RFC5452, which specifies that the query name is one of the attributes of a query that must be used to match a reply. This flaw could be abused to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
References
| ► | URL | Tags | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
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CVE-2013-0198 (GCVE-0-2013-0198)
Vulnerability from cvelistv5
Published
2013-03-04 21:00
Modified
2024-08-06 14:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via spoofed TCP based DNS queries. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3411.
References
| ► | URL | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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CVE-2017-14491 (GCVE-0-2017-14491)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.
References
| ► | URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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"url": "http://thekelleys.org.uk/dnsmasq/CHANGELOG"
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CVE-2021-45951 (GCVE-0-2021-45951)
Vulnerability from cvelistv5
Published
2021-12-31 23:54
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard and FuzzCheckForBogusWildcard). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
References
| ► | URL | Tags | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2017-14495 (GCVE-0-2017-14495)
Vulnerability from cvelistv5
Published
2017-10-02 21:00
Modified
2024-08-05 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service (memory consumption) via vectors involving DNS response creation.
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CVE-2009-2957 (GCVE-0-2009-2957)
Vulnerability from cvelistv5
Published
2009-09-02 15:00
Modified
2024-08-07 06:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet, as demonstrated by a read (aka RRQ) request.
References
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CVE-2021-45952 (GCVE-0-2021-45952)
Vulnerability from cvelistv5
Published
2021-12-31 23:53
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in dhcp_reply (called from dhcp_packet and FuzzDhcp). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.
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CVE-2020-25686 (GCVE-0-2020-25686)
Vulnerability from cvelistv5
Published
2021-01-20 16:47
Modified
2024-08-04 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
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CVE-2021-45955 (GCVE-0-2021-45955)
Vulnerability from cvelistv5
Published
2021-12-31 23:53
Modified
2024-08-04 04:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge." However, a contributor states that a security patch (mentioned in 016162.html) is needed
References
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