CVE-2021-26910
Vulnerability from cvelistv5
Published
2021-02-08 19:56
Modified
2024-08-03 20:33
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
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2021/02/09/1Exploit, Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834bPatch, Third Party Advisory
cve@mitre.orghttps://github.com/netblue30/firejail/releases/tag/0.9.64.4Release Notes, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/02/msg00015.htmlThird Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202105-19Third Party Advisory
cve@mitre.orghttps://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/Exploit, Third Party Advisory
cve@mitre.orghttps://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txtExploit, Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4849Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/02/09/1Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834bPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/netblue30/firejail/releases/tag/0.9.64.4Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00015.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202105-19Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txtExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4849Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website


{
   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.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.


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.