gsd-2021-20181
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-20181",
"description": "A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.",
"id": "GSD-2021-20181",
"references": [
"https://www.suse.com/security/cve/CVE-2021-20181.html",
"https://ubuntu.com/security/CVE-2021-20181",
"https://security.archlinux.org/CVE-2021-20181",
"https://linux.oracle.com/cve/CVE-2021-20181.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-20181"
],
"details": "A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.",
"id": "GSD-2021-20181",
"modified": "2023-12-13T01:23:12.742618Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2021-20181",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "qemu",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "up to, including 5.2.0"
}
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}
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}
]
},
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"value": "CWE-367-\u003eCWE-416"
}
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]
},
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},
{
"name": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html",
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"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html"
},
{
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"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210720-0009/",
"refsource": "MISC",
"url": "https://security.netapp.com/advisory/ntap-20210720-0009/"
},
{
"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-159/",
"refsource": "MISC",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-159/"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe_match": [
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"cpe23Uri": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "5.2.0",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe_name": [],
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}
]
},
"problemtype": {
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"value": "CWE-362"
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"references": {
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{
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1927007",
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"tags": [
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],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1927007"
},
{
"name": "[debian-lts-announce] 20210218 [SECURITY] [DLA 2560-1] qemu security update",
"refsource": "MLIST",
"tags": [
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],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html"
},
{
"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-159/",
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},
{
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"refsource": "CONFIRM",
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],
"url": "https://security.netapp.com/advisory/ntap-20210720-0009/"
},
{
"name": "[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update",
"refsource": "MLIST",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 0.8,
"impactScore": 6.0
}
},
"lastModifiedDate": "2022-09-30T15:18Z",
"publishedDate": "2021-05-13T16:15Z"
}
}
}
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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