CVE-2017-20240

Published Jun 12, 2026

Last updated a day ago

CVSS medium 5.9

Overview

Description
Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks. These versions use Perl's built-in eq comparison. Discrepancies in timing could be used to guess the underlying derived-key.
Source
9b29abf9-4ab0-4765-b253-1875cd9b441e
NVD status
Deferred

Risk scores

CVSS 3.1

Type
Secondary
Base score
5.9
Impact score
3.6
Exploitability score
2.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity
MEDIUM

Weaknesses

9b29abf9-4ab0-4765-b253-1875cd9b441e
CWE-208

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.