GLSA 201309-18: libvirt: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	libvirt: Multiple vulnerabilities
Date:	09/25/2013
Bugs:	#454588, #470096
ID:	201309-18

Synopsis

Multiple vulnerabilities have been found in libvirt, allowing remote attackers to execute arbitrary code or cause Denial of Service.

Background

libvirt is a C toolkit for manipulating virtual machines.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-emulation/libvirt	< 1.0.5.1-r3	>= 1.0.5.1-r3	All supported architectures

Description

An error in the virNetMessageFree() function in rpc/virnetserverclient.c can lead to a use-after-free. Additionally, a socket leak in the remoteDispatchStoragePoolListAllVolumes command can lead to file descriptor exhaustion.

Impact

A remote attacker could cause certain errors during an RPC connection to cause a message to be freed without being removed from the message queue, possibly resulting in execution of arbitrary code or a Denial of Service condition. Additionally, a remote attacker could repeatedly issue the command to list all pool volumes, causing a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All libvirt users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose
      ">=app-emulation/libvirt-1.0.5.1-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-201309-18.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.