Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/ZcashFoundation/frost/commit/379ef689c733b3d9c80fd409071d4f3a
- https://github.com/ZcashFoundation/frost/releases/tag/frost-core%2Fv2.2.0
- https://github.com/ZcashFoundation/frost/security/advisories/GHSA-wgq8-vr6r-mqxm
FAQ
What is CVE-2025-58359?
CVE-2025-58359 is a documented vulnerability. 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 gro...
How severe is CVE-2025-58359?
CVSS scoring is not yet available for CVE-2025-58359. Check NVD for updates.
Is there a patch for CVE-2025-58359?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.