CVE-2021-26910

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"https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html"}, {"name": "GLSA-202105-19", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202105-19"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-26910", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b", "refsource": "MISC", "url": "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b"}, {"name": "https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt", "refsource": "MISC", "url": "https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt"}, {"name": "https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/", "refsource": "MISC", "url": "https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/"}, {"name": "https://github.com/netblue30/firejail/releases/tag/0.9.64.4", "refsource": "MISC", "url": "https://github.com/netblue30/firejail/releases/tag/0.9.64.4"}, {"name": "[oss-security] 20210209 Re: [cve-pending] Firejail: root privilege escalation in OverlayFS code", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2021/02/09/1"}, {"name": "DSA-4849", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2021/dsa-4849"}, {"name": "[debian-lts-announce] 20210211 [SECURITY] [DLA 2554-1] firejail security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html"}, {"name": "GLSA-202105-19", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202105-19"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:33:41.306Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b"}, 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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:firejail_project:firejail:*:*:*:*:*:*:*:*", "matchCriteriaId": "4457E838-C33E-4AEA-842B-8A155CC63213", "versionEndExcluding": "0.9.64.4", "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"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation."}, {"lang": "es", "value": "Firejail versiones anteriores a 0.9.64.4, permite a atacantes omitir las restricciones de acceso previstas porque se presenta una condici\u00f3n de carrera TOCTOU entre una operaci\u00f3n de estad\u00edstica y una operaci\u00f3n de montaje OverlayFS"}], "id": "CVE-2021-26910", "lastModified": "2026-06-17T03:43:59.100", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-08T20:15:13.090", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", 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{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4849"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/02/09/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/netblue30/firejail/releases/tag/0.9.64.4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202105-19"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4849"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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