CVE-2024-13939

HIGH

Perl <0.322 - Timing Attack

Title source: llm
STIX 2.1

Description

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)." This is similar to CVE-2020-36829

Scores

CVSS v3 7.5
EPSS 0.0031
EPSS Percentile 53.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-208 CWE-203
Status published
Products (1)
fractal/string\ < 0.321
Published Mar 28, 2025
Tracked Since Feb 18, 2026