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<?xml version="1.0" encoding="UTF-8"?>
<glsa id="201310-01">
<title>Perl Module-Signature module: Arbitrary code execution</title>
<synopsis>The Module-Signature module for Perl has insufficient path checks,
allowing a remote attacker to execute arbitrary Perl code.
<product type="ebuild">Module-Signature</product>
<announced>October 04, 2013</announced>
<revised>October 04, 2013: 1</revised>
<package name="dev-perl/Module-Signature" auto="yes" arch="*">
<unaffected range="ge">0.720.0</unaffected>
<vulnerable range="lt">0.720.0</vulnerable>
<p>The Perl Module::Signature module adds signing capabilities to CPAN
<p>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/’, the code in this Perl module would be executed
when ‘cpansign -verify’ is run.
<impact type="normal">
<p>A remote attacker could possibly execute arbitrary code with the
privileges of the process.
<p>There is no known workaround at this time.</p>
<p>All users of the Module-Signature Perl module should upgrade to the
latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
<uri link="">CVE-2013-2145</uri>
<metadata tag="requester" timestamp="Wed, 21 Aug 2013 11:15:28 +0000">
<metadata tag="submitter" timestamp="Fri, 04 Oct 2013 06:56:47 +0000">