CVEvulnerability
CVE-2017-20240
5.9 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-06-12
- Last modified
- 2026-06-17
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-208
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.
Related
Weakness · CWE (1)
- CWE-208 Observable Timing Discrepancy weakness
References
- https://github.com/arodland/Crypt-PBKDF2/pull/6 github.com
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148 metacpan.org
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes metacpan.org
- http://www.openwall.com/lists/oss-security/2026/06/12/3 www.openwall.com