fkie_cve-2024-38440
Vulnerability from fkie_nvd
Published
2024-06-16 13:15
Modified
2025-05-01 19:44
Severity ?
Summary
Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow and segmentation violation, because of incorrectly using FPLoginExt in BN_bin2bn in etc/uams/uams_dhx_pam.c. The original issue 1097 report stated: 'The latest version of Netatalk (v3.2.0) contains a security vulnerability. This vulnerability arises due to a lack of validation for the length field after parsing user-provided data, leading to an out-of-bounds heap write of one byte (\0). Under specific configurations, this can result in reading metadata of the next heap block, potentially causing a Denial of Service (DoS) under certain heap layouts or with ASAN enabled. ... The vulnerability is located in the FPLoginExt operation of Netatalk, in the BN_bin2bn function found in /etc/uams/uams_dhx_pam.c ... if (!(bn = BN_bin2bn((unsigned char *)ibuf, KEYSIZE, NULL))) ... threads ... [#0] Id 1, Name: "afpd", stopped 0x7ffff4304e58 in ?? (), reason: SIGSEGV ... [#0] 0x7ffff4304e58 mov BYTE PTR [r14+0x8], 0x0 ... mov rdx, QWORD PTR [rsp+0x18] ... afp_login_ext(obj=<optimized out>, ibuf=0x62d000010424 "", ibuflen=0xffffffffffff0015, rbuf=<optimized out>, rbuflen=<optimized out>) ... afp_over_dsi(obj=0x5555556154c0 <obj>).' 2.4.1 and 3.1.19 are also fixed versions.
References
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C3F4245E-9F2F-485B-BF45-D12C4880C133",
"versionEndExcluding": "2.4.1",
"versionStartIncluding": "2.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BC79D241-5B4D-4430-9F44-5F138836EBD6",
"versionEndExcluding": "3.1.19",
"versionStartIncluding": "3.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:netatalk:netatalk:3.2.0:*:*:*:*:*:*:*",
"matchCriteriaId": "252F610A-8297-4142-BD3C-45BEF57E33AB",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Netatalk before 3.2.1 has an off-by-one error, and resultant heap-based buffer overflow and segmentation violation, because of incorrectly using FPLoginExt in BN_bin2bn in etc/uams/uams_dhx_pam.c. The original issue 1097 report stated: \u0027The latest version of Netatalk (v3.2.0) contains a security vulnerability. This vulnerability arises due to a lack of validation for the length field after parsing user-provided data, leading to an out-of-bounds heap write of one byte (\\0). Under specific configurations, this can result in reading metadata of the next heap block, potentially causing a Denial of Service (DoS) under certain heap layouts or with ASAN enabled. ... The vulnerability is located in the FPLoginExt operation of Netatalk, in the BN_bin2bn function found in /etc/uams/uams_dhx_pam.c ... if (!(bn = BN_bin2bn((unsigned char *)ibuf, KEYSIZE, NULL))) ... threads ... [#0] Id 1, Name: \"afpd\", stopped 0x7ffff4304e58 in ?? (), reason: SIGSEGV ... [#0] 0x7ffff4304e58 mov BYTE PTR [r14+0x8], 0x0 ... mov rdx, QWORD PTR [rsp+0x18] ... afp_login_ext(obj=\u003coptimized out\u003e, ibuf=0x62d000010424 \"\", ibuflen=0xffffffffffff0015, rbuf=\u003coptimized out\u003e, rbuflen=\u003coptimized out\u003e) ... afp_over_dsi(obj=0x5555556154c0 \u003cobj\u003e).\u0027 2.4.1 and 3.1.19 are also fixed versions."
},
{
"lang": "es",
"value": "Netatalk 3.2.0 tiene un error uno por uno y el resultado es un desbordamiento del b\u00fafer basado en el mont\u00f3n debido al uso incorrecto de FPLoginExt en BN_bin2bn en etc/uams/uams_dhx_pam.c."
}
],
"id": "CVE-2024-38440",
"lastModified": "2025-05-01T19:44:52.170",
"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2024-06-16T13:15:53.147",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Product"
],
"url": "https://github.com/Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c#L199-L200"
},
{
"source": "cve@mitre.org",
"tags": [
"Not Applicable"
],
"url": "https://github.com/Netatalk/netatalk/issues/1097"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Vendor Advisory"
],
"url": "https://github.com/Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://netatalk.io/security/CVE-2024-38440"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Product"
],
"url": "https://github.com/Netatalk/netatalk/blob/90d91a9ac9a7d6132ab7620d31c8c23400949206/etc/uams/uams_dhx_pam.c#L199-L200"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Not Applicable"
],
"url": "https://github.com/Netatalk/netatalk/issues/1097"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Vendor Advisory"
],
"url": "https://github.com/Netatalk/netatalk/security/advisories/GHSA-mxx4-9fhm-r3w5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://netatalk.io/security/CVE-2024-38440"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-193"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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