fkie_cve-2025-52881
Vulnerability from fkie_nvd
Published
2025-11-06 21:15
Modified
2025-11-12 16:20
Severity ?
Summary
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3."
}
],
"id": "CVE-2025-52881",
"lastModified": "2025-11-12T16:20:22.257",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2025-11-06T21:15:42.817",
"references": [
{
"source": "security-advisories@github.com",
"url": "http://github.com/opencontainers/runc/commit/a41366e74080fa9f26a2cd3544e2801449697322"
},
{
"source": "security-advisories@github.com",
"url": "http://github.com/opencontainers/runc/commit/fdcc9d3cad2f85954a241ccb910a61aaa1ef47f3"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/blob/v1.4.0-rc.2/RELEASES.md"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/3f925525b44d247e390e529e772a0dc0c0bc3557"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/435cc81be6b79cdec73b4002c0dae549b2f6ae6d"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/44a0fcf685db051c80b8c269812bb177f5802c58"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/4b37cd93f86e72feac866442988b549b5b7bf3e6"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/6fc191449109ea14bb7d61238f24a33fe08c651f"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/77889b56db939c323d29d1130f28f9aea2edb544"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/77d217c7c3775d8ca5af89e477e81568ef4572db"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/b3dd1bc562ed9996d1a0f249e056c16624046d28"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/d40b3439a9614a86e87b81a94c6811ec6fa2d7d2"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/d61fd29d854b416feaaf128bf650325cd2182165"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f90192bfa64"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/ed6b1693b8b3ae7eb0250a7e76fc888cdacf98c1"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/ff6fe1324663538167eca8b3d3eec61e1bd4fa51"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/commit/ff94f9991bd32076c871ef0ad8bc1b763458e480"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/security/advisories/GHSA-9493-h29p-rfm2"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/opencontainers/runc/security/advisories/GHSA-qw9x-cqr3-wc7r"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Undergoing Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-61"
},
{
"lang": "en",
"value": "CWE-363"
}
],
"source": "security-advisories@github.com",
"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.
- 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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