Description
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/.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libmodule-signature-perl | 0.73-1 | — |
| Debian 13 | libmodule-signature-perl | 0.73-1 | — |
| Debian 12 | libmodule-signature-perl | 0.73-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | perl-Module-Signature | 0.81-1.1 | openSUSE-SU-2024:10458-1 |
Advisories 1
- openSUSE-SU-2024:10458-1 perl-Module-Signature-0.81-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- openSUSE-SU-2013:1185 vendor-advisory
- 60352 vdb-entry
- openSUSE-SU-2013:1178 vendor-advisory
- [oss-security] 20130605 CVE-2013-2145: perl Module::Signature code execution vulnerability mailing-list
- USN-1896-1 vendor-advisory
- https://github.com/audreyt/module-signature/commit/cbd06b392a73c63159dc5c20ff5b3c8fc88c4896
- https://bugzilla.redhat.com/show_bug.cgi?id=971096
- https://github.com/audreyt/module-signature/commit/575f7bd6ba4cc7c92f841e8758f88a131674ebf2