Description
Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
AWS tough
Default version status: unaffected
0.9.0 to ≤ 0.21affected
AWS tuftool
Default version status: unaffected
0 to ≤ 0.14affected
References
- https://aws.amazon.com/security/security-bulletins/2026-019-aws/ ↗
- https://github.com/awslabs/tough/releases/tag/tough-v0.22.0 ↗
- https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 ↗
- https://crates.io/crates/tough/0.22.0 ↗
- https://crates.io/crates/tuftool/0.15.0 ↗
- https://github.com/awslabs/tough/security/advisories/GHSA-8m7c-8m39-rv4x ↗