Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/arodland/Crypt-PBKDF2/pull/6
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBK
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
- http://www.openwall.com/lists/oss-security/2026/06/12/3
FAQ
What is CVE-2017-20240?
CVE-2017-20240 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 deriv...
How severe is CVE-2017-20240?
CVE-2017-20240 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-20240?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.