GLSA-201310-01 : Perl Module-Signature module: Arbitrary code execution
Medium Nessus Plugin ID 70307
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-201310-01 (Perl Module-Signature module: Arbitrary code execution)
The ‘cpansign verify’ command will automatically download keys and use them to check the signature of CPAN packages via the SIGNATURE file.
If an attacker were to replace this (SHA1) with a special unknown cipher (e.g. ‘Special’) and were to include in the distribution a ‘Digest/Special.pm’, the code in this Perl module would be executed when ‘cpansign -verify’ is run.
A remote attacker could possibly execute arbitrary code with the privileges of the process.
There is no known workaround at this time.
SolutionAll users of the Module-Signature Perl module should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-perl/Module-Signature-0.720.0'