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VULNERABILITIES

CVE-2017-20240 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA: CISA-ADPCVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/arodland/Crypt-PBKDF2/pull/6 CPANSecIssue TrackingVendor
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148 CPANSecSource CodeVendor
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes CPANSecRelease NotesVendor
http://www.openwall.com/lists/oss-security/2026/06/12/3 CVE

Weakness Enumeration

CWE-IDCWE NameSource
CWE-208Observable Timing DiscrepancyCPANSec

Affected Products

ProductVersions
Crypt::PBKDF2
< 0.261630

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2017-20240
NVD Published Date:
Jun 12, 2026
NVD Last Modified:
Jun 17, 2026
Source:
CPANSec
CVE-2017-20240 Details - Not Deferred