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Fencer Intel
medium 4.4

CVE-2013-2145 json

The cpansign verify functionality in the Module::Signature module before 0.72 for Perl allows attackers to bypass the signature check and e…

published 2013-08-19 13 y ago modified 2026-06-16 4 mo ago also EUVD-2013-2110

cvss
4.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

The cpansign verify functionality in the Module::Signature module before 0.72 for Perl allows attackers to bypass the signature check and execute arbitrary code via a SIGNATURE file with a "special unknown cipher" that references an untrusted module in Digest/.

Patch / fix

  • libmodule-signature-perl Debian 14, Debian 13, Debian 12 0.73-1

debian advisories DEBIAN-CVE-2013-2145

  • perl-Module-Signature openSUSE Tumbleweed 0.81-1.1

opensuse advisories openSUSE-SU-2024:10458-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-2145 updated cvss 3.7

perl-Module-Signature: arbitrary code execution when verifying SIGNATURE

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/audreyt/module-signature/commit/cbd06b392a73c63159dc5c20ff5b3c8fc88c4896 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/audreyt/module-signature/commit/575f7bd6ba4cc7c92f841e8758f88a131674ebf2 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.