Vulnerability DatabaseCVE-2017-20240
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CVE-2017-20240
Published:June 12, 2026
Updated:June 28, 2026
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.
Affected Packages
https://github.com/arodland/Crypt-PBKDF2.git (GITHUB):
Affected version(s) >=v0.101160 <0.261630
Fix Suggestion:
Update to version 0.261630
Related Resources (4)
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
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Observable Timing Discrepancy
CWE-208
EPSS
Base Score:
0.32