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[gentoo-announce] [ GLSA 201110-15 ] GnuPG: User-assisted execution of arbitrary code

Posted on 22 October 2011
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201110-15
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http://security.gentoo.org/
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Severity: Normal
Title: GnuPG: User-assisted execution of arbitrary code
Date: October 22, 2011
Bugs: #329583
ID: 201110-15

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Synopsis
========
The GPGSM utility included in GnuPG contains a use-after-free
vulnerability that may allow an unauthenticated remote attacker to
execute arbitrary code.

Background
==========
The GNU Privacy Guard, GnuPG, is a free replacement for the PGP suite
of cryptographic software. The GPGSM utility in GnuPG is responsible
for processing X.509 certificates, signatures and encryption as well as
S/MIME messages.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-crypt/gnupg < 2.0.16-r1 >= 2.0.16-r1
< 2.0

Description
===========
The GPGSM utility in GnuPG contains a use-after-free vulnerability that
may be exploited when importing a crafted X.509 certificate explicitly
or during the signature verification process.

Impact
======
An unauthenticated remote attacker may execute arbitrary code with the
privileges of the user running GnuPG by enticing them to import a
crafted certificate.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All GnuPG 2.x users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-2.0.16-r1"

References
==========
[ 1 ] CVE-2010-2547
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-2547

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201110-15.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 2011 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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