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Gentoo Linux Security Advisory 201402-24

Gentoo Linux Security Advisory 201402-24
Posted Feb 22, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201402-24 - Multiple vulnerabilities have been discovered in GnuPG and Libgcrypt, which may result in execution of arbitrary code, Denial of Service, or the disclosure of private keys. Versions less than 2.0.22 are affected.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2012-6085, CVE-2013-4242, CVE-2013-4351, CVE-2013-4402
MD5 | 3986886fb402c959ccbc27956ae2a19c

Gentoo Linux Security Advisory 201402-24

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201402-24
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http://security.gentoo.org/
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Severity: Normal
Title: GnuPG, Libgcrypt: Multiple vulnerabilities
Date: February 21, 2014
Bugs: #449546, #478184, #484836, #487230, #494658
ID: 201402-24

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Synopsis
========

Multiple vulnerabilities have been discovered in GnuPG and Libgcrypt,
which may result in execution of arbitrary code, Denial of Service, or
the disclosure of private keys.

Background
==========

The GNU Privacy Guard, GnuPG, is a free replacement for the PGP suite
of cryptographic software. Libgcrypt is a cryptographic library based
on GnuPG.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-crypt/gnupg < 2.0.22 *>= 1.4.16
>= 2.0.22
2 dev-libs/libgcrypt < 1.5.3 >= 1.5.3
-------------------------------------------------------------------
2 affected packages

Description
===========

Multiple vulnerabilities have been discovered in GnuPG and Libgcrypt.
Please review the CVE identifiers referenced below for details.

Impact
======

An unauthenticated remote attacker may be able to execute arbitrary
code with the privileges of the user running GnuPG, cause a Denial of
Service condition, or bypass security restrictions. Additionally, a
side-channel attack may allow a local attacker to recover a private
key, please review "Flush+Reload: a High Resolution, Low Noise, L3
Cache Side-Channel Attack" in the References section for further
details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GnuPG 2.0 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-2.0.22"

All GnuPG 1.4 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.16"

All Libgcrypt users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libgcrypt-1.5.3"

References
==========

[ 1 ] CVE-2012-6085
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6085
[ 2 ] CVE-2013-4242
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4242
[ 3 ] CVE-2013-4351
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4351
[ 4 ] CVE-2013-4402
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4402
[ 5 ] Flush+Reload: a High Resolution, Low Noise, L3 Cache Side-Channel
Attack
http://eprint.iacr.org/2013/448

Availability
============

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

http://security.gentoo.org/glsa/glsa-201402-24.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 2014 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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