GLSA 201312-01: GNU C Library: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	GNU C Library: Multiple vulnerabilities
Date:	12/03/2013
Bugs:	#350744, #356567, #386323, #386327, #386329, #386333, #386343, #386349, #393477, #404993
ID:	201312-01

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	Architecture(s)
sys-libs/glibc	< 2.15-r3	>= 2.15-r3	All supported architectures

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

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.