fkie_cve-2020-29568
Vulnerability from fkie_nvd
Published
2020-12-15 17:15
Modified
2024-11-21 05:24
Severity ?
Summary
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| xen | xen | * | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
"matchCriteriaId": "98708CDE-265E-4841-B910-B632F7BAAC3E",
"versionEndIncluding": "4.14.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
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]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable."
},
{
"lang": "es",
"value": "Se detect\u00f3 un problema en Xen versiones hasta 4.14.x.\u0026#xa0;Algunos Sistemas Operativos (como Linux, FreeBSD y NetBSD) procesan eventos de observaci\u00f3n usando un solo hilo o sub-proceso.\u0026#xa0;Si los eventos se reciben m\u00e1s r\u00e1pido de lo que el hilo es capaz de manejar, se pondr\u00e1n en cola.\u0026#xa0;Como la cola no tiene l\u00edmites, un invitado puede activar un OOM en el backend.\u0026#xa0;Todos los sistemas con FreeBSD, Linux o NetBSD (cualquier versi\u00f3n) dom0 son vulnerables"
}
],
"id": "CVE-2020-29568",
"lastModified": "2024-11-21T05:24:13.270",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
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"impactScore": 4.0,
"source": "nvd@nist.gov",
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},
"published": "2020-12-15T17:15:14.660",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
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],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html"
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"url": "https://security.gentoo.org/glsa/202107-30"
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{
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"tags": [
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"url": "https://www.debian.org/security/2021/dsa-4843"
},
{
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"url": "https://xenbits.xenproject.org/xsa/advisory-349.html"
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{
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},
{
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"url": "https://www.debian.org/security/2021/dsa-4843"
},
{
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"tags": [
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],
"url": "https://xenbits.xenproject.org/xsa/advisory-349.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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