CVE-2021-26910
Vulnerability from cvelistv5
Published
2021-02-08 19:56
Modified
2024-08-03 20:33
Severity ?
EPSS score ?
Summary
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.
References
{ containers: { adp: [ { providerMetadata: { dateUpdated: "2024-08-03T20:33:41.306Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b", }, { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt", }, { tags: [ "x_refsource_MISC", "x_transferred", ], url: "https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/", }, { tags: [ "x_refsource_MISC", "x_transferred", ], 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", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "http://www.openwall.com/lists/oss-security/2021/02/09/1", }, { name: "DSA-4849", tags: [ "vendor-advisory", "x_refsource_DEBIAN", "x_transferred", ], url: "https://www.debian.org/security/2021/dsa-4849", }, { name: "[debian-lts-announce] 20210211 [SECURITY] [DLA 2554-1] firejail security update", tags: [ "mailing-list", "x_refsource_MLIST", "x_transferred", ], url: "https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html", }, { name: "GLSA-202105-19", tags: [ "vendor-advisory", "x_refsource_GENTOO", "x_transferred", ], url: "https://security.gentoo.org/glsa/202105-19", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { product: "n/a", vendor: "n/a", versions: [ { status: "affected", version: "n/a", }, ], }, ], 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.", }, ], metrics: [ { cvssV3_1: { 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/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N", version: "3.1", }, }, ], problemTypes: [ { descriptions: [ { description: "n/a", lang: "en", type: "text", }, ], }, ], providerMetadata: { dateUpdated: "2021-05-26T10:06:18", orgId: "8254265b-2729-46b6-b9e3-3dfca2d5bfca", shortName: "mitre", }, references: [ { tags: [ "x_refsource_MISC", ], url: "https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b", }, { tags: [ "x_refsource_MISC", ], url: "https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt", }, { tags: [ "x_refsource_MISC", ], url: "https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/", }, { tags: [ "x_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", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "http://www.openwall.com/lists/oss-security/2021/02/09/1", }, { name: "DSA-4849", tags: [ "vendor-advisory", "x_refsource_DEBIAN", ], url: "https://www.debian.org/security/2021/dsa-4849", }, { name: "[debian-lts-announce] 20210211 [SECURITY] [DLA 2554-1] firejail security update", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "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", }, ], }, }, }, }, cveMetadata: { assignerOrgId: "8254265b-2729-46b6-b9e3-3dfca2d5bfca", assignerShortName: "mitre", cveId: "CVE-2021-26910", datePublished: "2021-02-08T19:56:38", dateReserved: "2021-02-08T00:00:00", dateUpdated: "2024-08-03T20:33:41.306Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2021-26910\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-02-08T20:15:13.090\",\"lastModified\":\"2024-11-21T05:57:01.223\",\"vulnStatus\":\"Modified\",\"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 condición de carrera TOCTOU entre una operación de estadística y una operación de montaje OverlayFS\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:M/Au:N/C:C/I:C/A:C\",\"baseScore\":6.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.4,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:firejail_project:firejail:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"0.9.64.4\",\"matchCriteriaId\":\"4457E838-C33E-4AEA-842B-8A155CC63213\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"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\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2021/02/09/1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/netblue30/firejail/releases/tag/0.9.64.4\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202105-19\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4849\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2021/02/09/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/netblue30/firejail/releases/tag/0.9.64.4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"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\":[\"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\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4849\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}", }, }
Log in or create an account to share your comment.
Security Advisory comment format.
This schema specifies the format of a comment related to a security advisory.
Title of the comment
Description of the comment
Loading…
Loading…
Loading…
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.