Gentoo: 201312-01 GNU C Library: Multiple vulnerabilities
Posted by Benjamin D. Thomas   
Gentoo Multiple vulnerabilities have been found in GNU C Library, the worst of which allowing arbitrary code execution and privilege escalation.
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Gentoo Linux Security Advisory                           GLSA 201312-01
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                                            http://security.gentoo.org/
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 Severity: High
    Title: GNU C Library: Multiple vulnerabilities
     Date: December 03, 2013
     Bugs: #350744, #356567, #386323, #386327, #386329, #386333,
           #386343, #386349, #393477, #404993
       ID: 201312-01

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Synopsis
========

Multiple vulnerabilities have been found in GNU C Library, the worst of
which allowing arbitrary code execution and privilege escalation.

Background
==========

The GNU C library is the standard C library used by Gentoo Linux
systems.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-libs/glibc              < 2.15-r3                 >= 2.15-r3

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

Multiple vulnerabilities have been discovered in GNU C Library. Please
review the CVE identifiers referenced below for details.

Impact
======

A local attacker could trigger vulnerabilities in dynamic library
loader, making it possible to load attacker-controlled shared objects
during execution of setuid/setgid programs to escalate privileges.

A context-dependent attacker could trigger various vulnerabilities in
GNU C Library, including a buffer overflow, leading to execution of
arbitrary code or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU C Library users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-libs/glibc-2.15-r3"

References
==========

[ 1 ] CVE-2009-5029
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-5029
[ 2 ] CVE-2010-3847
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3847
[ 3 ] CVE-2011-0536
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0536
[ 4 ] CVE-2011-1071
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1071
[ 5 ] CVE-2011-1089
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1089
[ 6 ] CVE-2011-1095
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1095
[ 7 ] CVE-2011-1658
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1658
[ 8 ] CVE-2011-1659
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1659
[ 9 ] CVE-2012-0864
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0864

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

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

 http://security.gentoo.org/glsa/glsa-201312-01.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