GLSA-201310-01 : Perl Module-Signature module: Arbitrary code execution

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201310-01
(Perl Module-Signature module: Arbitrary code execution)

The &lsquo
cpansign verify&rsquo
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. &lsquo
Special&rsquo
) and were to include in the distribution a
&lsquo
Digest/Special.pm&rsquo
, the code in this Perl module would be executed
when &lsquo
cpansign -verify&rsquo
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.

See also :

http://www.gentoo.org/security/en/glsa/glsa-201310-01.xml

Solution :

All 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'

Risk factor :

Medium / CVSS Base Score : 4.4
(CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 3.8
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 70307 ()

Bugtraq ID: 60352

CVE ID: CVE-2013-2145