{"id":"CVE-2024-39897","aliases":["GHSA-55r9-5mx9-qq7r","GO-2024-2979"],"url":"https://o3.security/vulnerability/CVE-2024-39897","summary":"Cache driver GetBlob() allows read access to any blob without access control check","details":"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.","published":"2024-07-09T18:48:24.335Z","modified":"2026-07-15T01:48:55.107428881Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"zotregistry.io/zot","fixedVersion":"2.1.0"},{"ecosystem":"Go","name":"zotregistry.dev/zot","fixedVersion":"2.1.0"}],"fix":{"url":"https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df","label":"project-zot/zot@aaee022"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39897.json"},{"type":"ADVISORY","url":"https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39897"},{"type":"FIX","url":"https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:55.107428881Z"}}