Storable versions before 3.05 for Perl has a stack overflow

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Summary

CVECVE-2017-20230
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-21 16:16:18 UTC
Updated2026-04-22 17:36:04 UTC
DescriptionStorable versions before 3.05 for Perl has a stack overflow. The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.000280000 probability, percentile 0.080830000 (date 2026-04-22)

Problem Types: CWE-121 | CWE-121 CWE-121 Stack-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nwclark Storable All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA NWCLARK Storable affected 3.05 custom Not specified

References

ReferenceSourceLinkTags
www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.html 9b29abf9-4ab0-4765-b253-1875cd9b441e www.nntp.perl.org Third Party Advisory
metacpan.org/release/RURBAN/Storable-3.05/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org Release Notes
github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patch 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com Patch
www.openwall.com/lists/oss-security/2026/04/21/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
github.com/Perl/perl5/issues/15831 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com Issue Tracking
www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.html 9b29abf9-4ab0-4765-b253-1875cd9b441e www.nntp.perl.org Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2017-01-24T00:00:00.000ZPerl bug RT1 30635 reported.
CNA2017-01-25T00:00:00.000ZPatch committed.
CNA2017-01-29T00:00:00.000ZStorable version 3.05 released.
CNA2018-02-20T00:00:00.000ZPerl v5.27.9 released with Storable 3.06.
CNA2018-10-06T00:00:00.000Zissue assigned CPANSA-Storable-2017-01 in the CPANSA distribution.

Solutions

CNA: Upgrade to Storable version 3.05 or newer.

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