CVEvulnerability
CVE-2021-38195
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-08-08
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-347
Description
An issue was discovered in the libsecp256k1 crate before 0.5.0 for Rust. It can verify an invalid signature because it allows the R or S parameter to be larger than the curve order, aka an overflow.
Affected configurations
• parity libsecp256k1 (< 0.5.0)
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libsecp256k1/RUSTSEC-2021-0076.md Third Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0076.html Exploit, Issue Tracking, Patch, Third Party Advisory
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libsecp256k1/RUSTSEC-2021-0076.md Third Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0076.html Exploit, Issue Tracking, Patch, Third Party Advisory