Vulnerability Details : CVE-2021-38195
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.
Products affected by CVE-2021-38195
- cpe:2.3:a:parity:libsecp256k1:*:*:*:*:*:rust:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-38195
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38195
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-38195
-
The product does not verify, or incorrectly verifies, the cryptographic signature for data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-38195
-
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
RUSTSEC-2021-0076: libsecp256k1: libsecp256k1 allows overflowing signatures › RustSec Advisory DatabaseExploit;Issue Tracking;Patch;Third Party Advisory
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