{"id":"GHSA-2h6c-j3gf-xp9r","summary":"IPFS go-bitfield vulnerable to DoS via malformed size arguments","details":"### Impact\nWhen feeding untrusted user input into the size parameter of `NewBitfield` and `FromBytes` functions, an attacker can trigger `panic`s.\n\nThis happen when the `size` is a not a multiple of `8` or is negative.\nThere were already a note in the `NewBitfield` documentation:\n\u003e ```\n\u003e Panics if size is not a multiple of 8.\n\u003e ````\n\nBut it incomplete and missing from `FromBytes`'s documentation.\n\nThis has been replaced by returning an `(Bitfield, error)` and returning a non nil error if the size is wrong.\n\n### Patches\n- https://github.com/ipfs/go-bitfield/commit/5e1d256fe043fc4163343ccca83862c69c52e579\n\n### Workarounds\n- Ensure `size%8 == 0 && size \u003e= 0` yourself before calling `NewBitfield` or `FromBytes`\n\n### References\n- https://github.com/ipfs/go-unixfs/security/advisories/GHSA-q264-w97q-q778\n","aliases":["CVE-2023-23626","GO-2023-1558"],"modified":"2026-09-10T03:49:51.750951929Z","published":"2023-02-10T19:52:45Z","database_specific":{"nvd_published_at":"2023-02-09T21:15:00Z","cwe_ids":["CWE-1284","CWE-754"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2023-02-10T19:52:45Z"},"references":[{"type":"WEB","url":"https://github.com/ipfs/go-bitfield/security/advisories/GHSA-2h6c-j3gf-xp9r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23626"},{"type":"WEB","url":"https://github.com/ipfs/go-bitfield/commit/5e1d256fe043fc4163343ccca83862c69c52e579"},{"type":"PACKAGE","url":"https://github.com/ipfs/go-bitfield"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2023-1558"}],"affected":[{"package":{"name":"github.com/ipfs/go-bitfield","ecosystem":"Go","purl":"pkg:golang/github.com/ipfs/go-bitfield"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.1.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-2h6c-j3gf-xp9r/GHSA-2h6c-j3gf-xp9r.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"}]}