CVE-2024-39897

{"id": "CVE-2024-39897", "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2024-07-09T19:15:12.953", "references": [{"url": "https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df", "source": "security-advisories@github.com"}, {"url": "https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r", "source": "security-advisories@github.com"}, {"url": "https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "zot is an OCI image registry. Prior to 2.1.0, the cache driver `GetBlob()` allows read access to any blob without access control check. If a Zot `accessControl` policy allows users read access to some repositories but restricts read access to other repositories and `dedupe` is enabled (it is enabled by default), then an attacker who knows the name of an image and the digest of a blob (that they do not have read access to), they may maliciously read it via a second repository they do have read access to. \n This attack is possible because [`ImageStore.CheckBlob()` calls `checkCacheBlob()`](https://github.com/project-zot/zot/blob/v2.1.0-rc2/pkg/storage/imagestore/imagestore.go#L1158-L1159) to find the blob a global cache by searching for the digest. If it is found, it is copied to the user requested repository with `copyBlob()`. The attack may be mitigated by configuring \"dedupe\": false in the \"storage\" settings. The vulnerability is fixed in 2.1.0."}, {"lang": "es", "value": "zot es un registro de im\u00e1genes OCI. Antes de 2.1.0, el controlador de cach\u00e9 `GetBlob()` permite acceso de lectura a cualquier blob sin verificaci\u00f3n de control de acceso. Si una pol\u00edtica `accessControl` de Zot permite a los usuarios acceso de lectura a algunos repositorios pero restringe el acceso de lectura a otros repositorios y `dedupe` est\u00e1 habilitado (est\u00e1 habilitado de forma predeterminada), entonces un atacante que conoce el nombre de una imagen y el resumen de una blob (al que no tienen acceso de lectura), pueden leerlo maliciosamente a trav\u00e9s de un segundo repositorio al que s\u00ed tienen acceso de lectura. Este ataque es posible porque [`ImageStore.CheckBlob()` llama a `checkCacheBlob()`](https://github.com/project-zot/zot/blob/v2.1.0-rc2/pkg/storage/imagestore/imagestore .go#L1158-L1159) para encontrar el blob como cach\u00e9 global buscando el resumen. Si se encuentra, se copia al repositorio solicitado por el usuario con `copyBlob()`. El ataque se puede mitigar configurando \"dedupe\": false en la configuraci\u00f3n de \"storage\". La vulnerabilidad se solucion\u00f3 en 2.1.0."}], "lastModified": "2024-11-21T09:28:31.350", "sourceIdentifier": "security-advisories@github.com"}