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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

12 Jun 2026, 17:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/06/12/3 -
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.9

12 Jun 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-12 14:16

Updated : 2026-06-17 01:15

NVD link : CVE-2017-20240

Mitre link : CVE-2017-20240

CVE.ORG link : CVE-2017-20240

JSON object : View

Products Affected

No product.

CWE

CWE-208

Observable Timing Discrepancy

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