Description (CNA)
ZF FROST is a Rust implementation of FROST (Flexible Round-Optimised Schnorr Threshold signatures). In versions 2.0.0 through 2.1.0, refresh shares with smaller min_signers will reduce security of group. The inability to change min_signers (i.e. the threshold) with the refresh share functionality (frost_core::keys::refresh module) was not made clear to users. Using a smaller value would not decrease the threshold, and attempts to sign using a smaller threshold would fail. Additionally, after refreshing the shares with a smaller threshold, it would still be possible to sign with the original threshold, potentially causing a security loss to the participant's shares. This issue is fixed in version 2.2.0.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ZcashFoundation / frost | affected >= 2.0.0, < 2.2.0 |
CWE
CWE-325
References
- https://github.com/ZcashFoundation/frost/security/advisories/GHSA-wgq8-vr6r-mqxm
- https://github.com/ZcashFoundation/frost/commit/379ef689c733b3d9c80fd409071d4f3af4dafed2
- https://github.com/ZcashFoundation/frost/releases/tag/frost-core%2Fv2.2.0
ADP enrichment
No English description supplied.
No references supplied.