CVE-2021-32760

{"id": "CVE-2021-32760", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 1.6}]}, "published": "2021-07-19T21:15:07.857", "references": [{"url": "https://github.com/containerd/containerd/releases/tag/v1.4.8", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/containerd/containerd/releases/tag/v1.5.4", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w", "tags": ["Third Party Advisory"], "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": "security-advisories@github.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-732"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-668"}]}], "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\u2019s 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 ejecuci\u00f3n 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 dise\u00f1ada 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, modificaci\u00f3n o ejecuci\u00f3n de archivos sin un proceso adicional de cooperaci\u00f3n. Este bug ha sido corregido en containerd versiones 1.5.4 y 1.4.8. Como soluci\u00f3n, aseg\u00farese de que los usuarios s\u00f3lo obtienen im\u00e1genes de fuentes de confianza. Los m\u00f3dulos de seguridad de Linux (LSM) como SELinux y AppArmor pueden limitar los archivos potencialmente afectados por este bug mediante pol\u00edticas y perfiles que impiden que containerd interact\u00fae con archivos espec\u00edficos"}], "lastModified": "2024-01-31T13:15:08.313", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B80F3640-4786-43D6-B222-FBE9A98B86D8", "versionEndExcluding": "1.4.8"}, {"criteria": "cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B29F81BF-E74A-4C4E-ADEE-7A70AA58A9DC", "versionEndExcluding": "1.5.4", "versionStartIncluding": "1.5.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}