CVE-2017-20240

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.

Score

CVSS 3.1 5.9 Medium

Status

Deferred - 9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-06-12

Last modified

2026-06-12

Weaknesses

CWE-208

Affected products

• Cryptpbkdf2 (Arodland)

References

• https://github.com/arodland/Crypt-PBKDF2/pull/6
• https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148
• https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
• http://www.openwall.com/lists/oss-security/2026/06/12/3