- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 201402-24
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Normal
    Title: GnuPG, Libgcrypt: Multiple vulnerabilities
     Date: February 21, 2014
     Bugs: #449546, #478184, #484836, #487230, #494658
       ID: 201402-24

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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
      https://eprint.iacr.org/2013/448

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

 https://security.gentoo.org/glsa/201402-24

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.

https://creativecommons.org/licenses/by-sa/2.5/