{"id":"GHSA-q264-w97q-q778","summary":"Denial of service via HAMT Decoding Panics","details":"### Impact\nTrying to read malformed HAMT sharded directories can cause panics and virtual memory leaks.\nIf you are reading untrusted user input, an attacker can then trigger a panic.\n\nThis is caused by bogus `fanout` parameter in the HAMT directory nodes.\nThis include checks returned in [ipfs/go-bitfield GHSA-2h6c-j3gf-xp9r](https://github.com/ipfs/go-bitfield/security/advisories/GHSA-2h6c-j3gf-xp9r), as well as limiting the `fanout` to `\u003c= 1024` (to avoid attempts of arbitrary sized allocations).\n\n### Patches\n- https://github.com/ipfs/go-unixfs/commit/dbcc43ec3e2db0d01e8d80c55040bba3cf22cb4b\n\n### Workarounds\nDo not feed untrusted user data to the decoding functions.\n\n### References\n- https://github.com/ipfs/go-bitfield/security/advisories/GHSA-2h6c-j3gf-xp9r\n","aliases":["CVE-2023-23625","GO-2023-1557"],"modified":"2024-05-20T21:43:31Z","published":"2023-02-10T23:08:06Z","database_specific":{"github_reviewed_at":"2023-02-10T23:08:06Z","nvd_published_at":"2023-02-09T21:15:00Z","cwe_ids":["CWE-400"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/ipfs/go-unixfs/security/advisories/GHSA-q264-w97q-q778"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23625"},{"type":"WEB","url":"https://github.com/ipfs/go-unixfs/commit/467d139a640ecee4f2e74643dafcc58bb3b54175"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-q264-w97q-q778"},{"type":"PACKAGE","url":"https://github.com/ipfs/go-unixfs"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2023-1557"}],"affected":[{"package":{"name":"github.com/ipfs/go-unixfs","ecosystem":"Go","purl":"pkg:golang/github.com/ipfs/go-unixfs"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.4.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-q264-w97q-q778/GHSA-q264-w97q-q778.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}