CVE-2017-20240

medium

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.

References

https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes

https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148

https://github.com/arodland/Crypt-PBKDF2/pull/6

http://www.openwall.com/lists/oss-security/2026/06/12/3

Details

Source: Mitre, NVD

Published: 2026-06-12

Updated: 2026-06-12

Risk Information

CVSS v2

Base Score: 5.4

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

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