CVE-2020-13895

Published: Jun 7, 2020Modified: Nov 21, 2024

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: P5 Crypt Perl Project: P5 Crypt Perl

P5 Crypt Perl Project

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
P5 Crypt Perl Project P5 Crypt Perl	Before 0.32

Related CWEs

Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

References (4)

https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/FGasper/p5-Crypt-Perl/issues/14

Source: cve@mitre.org

Third Party Advisory

https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://github.com/FGasper/p5-Crypt-Perl/issues/14

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.