GNU C Library: Multiple vulnerabilities — GLSA 201312-01

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

Affected Packages

sys-libs/glibc on all architectures
Affected versions < 2.15-r3
Unaffected versions >= 2.15-r3

Background

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

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

Release Date
December 03, 2013

Latest Revision
December 03, 2013: 1

Severity
high

Exploitable
local, remote

Bugzilla entries