CVE Vulnerability

CVE-2020-13895

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2 Patch Third Party Advisory
https://github.com/FGasper/p5-Crypt-Perl/issues/14 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:p5-crypt-perl_project:p5-crypt-perl:*:*:*:*:*:perl:*:*
Information

Published : 2020-06-07 01:15

Updated : 2020-06-15 04:40

NVD link : CVE-2020-13895

Mitre link : CVE-2020-13895

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature