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CVE Vulnerability Details :
CVE-2017-20240
PUBLISHED
More InfoOfficial Page
Assigner-CPANSec
Assigner Org ID-9b29abf9-4ab0-4765-b253-1875cd9b441e
View Known Exploited Vulnerability (KEV) details
Published At-12 Jun, 2026 | 13:19
Updated At-12 Jun, 2026 | 16:59
Rejected At-
▼CVE Numbering Authority (CNA)
Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks

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 Products
Vendor
ARODLAND
Product
Crypt::PBKDF2
Collection URL
https://cpan.org/modules
Package Name
Crypt-PBKDF2
Repo
https://github.com/arodland/Crypt-PBKDF2
Program Routines
  • Crypt::PBKDF2::validate
Default Status
unaffected
Versions
Affected
  • From 0 before 0.261630 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-208CWE-208 Observable Timing Discrepancy
Type: CWE
CWE ID: CWE-208
Description: CWE-208 Observable Timing Discrepancy
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Upgrade to version 0.261630 or later.

Configurations
Workarounds

Apply the patch from the referenced pull request.

Exploits
Credits
Timeline
EventDate
Issue reported as pull request2017-12-11 00:00:00
Version 0.261630 released with a fix2026-06-11 00:00:00
Event: Issue reported as pull request
Date: 2017-12-11 00:00:00
Event: Version 0.261630 released with a fix
Date: 2026-06-11 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/arodland/Crypt-PBKDF2/pull/6
issue-tracking
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148
N/A
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
release-notes
Hyperlink: https://github.com/arodland/Crypt-PBKDF2/pull/6
Resource:
issue-tracking
Hyperlink: https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148
Resource: N/A
Hyperlink: https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
Resource:
release-notes
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2026/06/12/3
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/06/12/3
Resource: N/A
Details not found