CVE-2020-13895
Last modified
CVE-2020-13895 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Crypt::Perl::ECDSA in the Crypt::Perl (aka p5-Crypt-Perl) module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 (prime256v1). EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
Crypt::Perl::ECDSA in the Crypt::Perl (aka p5-Crypt-Perl) module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 (prime256v1). This could conceivably have a security-relevant impact if an attacker wishes to use public r and s values when guessing whether signature verification will fail.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| P5-Crypt-Perl Project | P5-Crypt-Perl | < 0.32 |
References
- https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2Patch, Third Party Advisory
- https://github.com/FGasper/p5-Crypt-Perl/issues/14Third Party Advisory
- https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2Patch, Third Party Advisory
- https://github.com/FGasper/p5-Crypt-Perl/issues/14Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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