CVE-2020-13895
HIGHp5-Crypt-Perl < 0.32 - Improper Verification of Cryptographic Signature
Title source: llmDescription
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.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/FGasper/p5-Crypt-Perl/issues/14
Patch, Third Party Advisory x_refsource_misc
https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2
Scores
CVSS v3
8.8
EPSS
0.0071
EPSS Percentile
48.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-347
Status
published
Products (1)
p5-crypt-perl_project/p5-crypt-perl
< 0.32
Published
Jun 07, 2020
Tracked Since
Feb 18, 2026