Medium, CVSS 5.9GoPublished
Denial of service via HAMT Decoding Panics
CVE-2023-23625 · GHSA-q264-w97q-q778
- Affected
- Go github.com/ipfs/go-unixfs < 0.4.3
- Fixed in
- 0.4.3· Vendor fix available
- Issue
- Impact Trying to read malformed HAMT sharded directories can cause panics and virtual memory leaks. If you are reading untrusted user input, an attacker can then trigger a panic. This is caused by bogus fanout parameter in the HAMT directory nodes. This include checks returned in ipfs/go-bitfield GHSA-2h6c-j3gf-xp9r, as well as limiting the fanout to <= 1024 (to avoid attempts of arbitrary sized allocations). Patches - https://github.com/ipfs/go-unixfs/commit/dbcc43ec3e2db0d01e8d80c55040bba3cf22cb4b Workarounds Do not feed untrusted user data to the decoding functions. References - https://github.com/ipfs/go-bitfield/security/advisories/GHSA-2h6c-j3gf-xp9r
Recommended action: Upgrade to 0.4.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.