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Gentoo alert 201310-01 (perl-Module-Signature)

From:  Sergey Popov <pinkbyte@gentoo.org>
To:  gentoo-announce@gentoo.org
Subject:  [gentoo-announce] [ GLSA 201310-01 ] Perl Module-Signature module: Arbitrary code execution
Date:  Fri, 04 Oct 2013 11:14:53 +0400
Message-ID:  <524E6AED.5040908@gentoo.org>
Archive-link:  Article, Thread

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201310-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Perl Module-Signature module: Arbitrary code execution Date: October 04, 2013 Bugs: #472428 ID: 201310-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== The Module-Signature module for Perl has insufficient path checks, allowing a remote attacker to execute arbitrary Perl code. Background ========== The Perl Module::Signature module adds signing capabilities to CPAN modules. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-perl/Module-Signature < 0.720.0 >= 0.720.0 Description =========== 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. Impact ====== A remote attacker could possibly execute arbitrary code with the privileges of the process. Workaround ========== There is no known workaround at this time. Resolution ========== All users of the Module-Signature Perl module should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v ">=dev-perl/Module-Signature-0.720.0" References ========== [ 1 ] CVE-2013-2145 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2145 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201310-01.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2013 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5


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