fkie_cve-2021-32760
Vulnerability from fkie_nvd
Published
2021-07-19 21:15
Modified
2024-11-21 06:07
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Summary
containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.
References
security-advisories@github.comhttps://github.com/containerd/containerd/releases/tag/v1.4.8Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/containerd/containerd/releases/tag/v1.5.4Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3wThird Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/
security-advisories@github.comhttps://security.gentoo.org/glsa/202401-31
af854a3a-2127-422b-91ae-364da2661108https://github.com/containerd/containerd/releases/tag/v1.4.8Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/containerd/containerd/releases/tag/v1.5.4Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3wThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202401-31
Impacted products
Vendor Product Version
linuxfoundation containerd *
linuxfoundation containerd *
fedoraproject fedora 34


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "B80F3640-4786-43D6-B222-FBE9A98B86D8",
                     versionEndExcluding: "1.4.8",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "B29F81BF-E74A-4C4E-ADEE-7A70AA58A9DC",
                     versionEndExcluding: "1.5.4",
                     versionStartIncluding: "1.5.0",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                     matchCriteriaId: "A930E247-0B43-43CB-98FF-6CE7B8189835",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.",
      },
      {
         lang: "es",
         value: "containerd es un tiempo de ejecución de contenedores. Se ha encontrado un bug en las versiones de containerd anteriores a 1.4.8 y la 1.5.4, donde tirando y extrayendo una imagen de contenedor especialmente diseñada puede resultar en cambios en los permisos de archivos Unix para los archivos existentes en el sistema de archivos del host. Los cambios en los permisos de los archivos pueden denegar el acceso al propietario esperado del archivo, ampliar el acceso a otros, o establecer bits extendidos como setuid, setgid y sticky. Este bug no permite directamente la lectura, modificación o ejecución de archivos sin un proceso adicional de cooperación. Este bug ha sido corregido en containerd versiones 1.5.4 y 1.4.8. Como solución, asegúrese de que los usuarios sólo obtienen imágenes de fuentes de confianza. Los módulos de seguridad de Linux (LSM) como SELinux y AppArmor pueden limitar los archivos potencialmente afectados por este bug mediante políticas y perfiles que impiden que containerd interactúe con archivos específicos",
      },
   ],
   id: "CVE-2021-32760",
   lastModified: "2024-11-21T06:07:41.097",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "MEDIUM",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 6.8,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "PARTIAL",
               vectorString: "AV:N/AC:M/Au:N/C:P/I:P/A:P",
               version: "2.0",
            },
            exploitabilityScore: 8.6,
            impactScore: 6.4,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: true,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "LOW",
               integrityImpact: "LOW",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
               version: "3.1",
            },
            exploitabilityScore: 1.6,
            impactScore: 3.4,
            source: "security-advisories@github.com",
            type: "Secondary",
         },
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 6.3,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "LOW",
               integrityImpact: "LOW",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
               version: "3.1",
            },
            exploitabilityScore: 2.8,
            impactScore: 3.4,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2021-07-19T21:15:07.857",
   references: [
      {
         source: "security-advisories@github.com",
         tags: [
            "Release Notes",
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/releases/tag/v1.4.8",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Release Notes",
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/releases/tag/v1.5.4",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w",
      },
      {
         source: "security-advisories@github.com",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/",
      },
      {
         source: "security-advisories@github.com",
         url: "https://security.gentoo.org/glsa/202401-31",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Release Notes",
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/releases/tag/v1.4.8",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Release Notes",
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/releases/tag/v1.5.4",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Third Party Advisory",
         ],
         url: "https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://security.gentoo.org/glsa/202401-31",
      },
   ],
   sourceIdentifier: "security-advisories@github.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-668",
            },
         ],
         source: "security-advisories@github.com",
         type: "Secondary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-732",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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.




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.