GLSA 201204-06: PolicyKit: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	PolicyKit: Multiple vulnerabilities
Date:	04/17/2012
Bugs:	#314535, #364973, #401513
ID:	201204-06

Synopsis

Multiple vulnerabilities have been found in PolicyKit, the worst of which may allow a local attacker to gain root privileges.

Background

PolicyKit is a toolkit for controlling privileges for system-wide services.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-auth/polkit	< 0.104-r1	>= 0.104-r1	All supported architectures

Description

Multiple vulnerabilities have been found in PolicyKit:

Error messages in the pkexec utility disclose the existence of local files (CVE-2010-0750).
The pkexec utility initially checks the effective user ID of its parent process for authorization, instead of checking the real user ID (CVE-2011-1485).
Members of the "wheel" group are able to execute commands as an administrator without a password (CVE-2011-4945).

Impact

A local attacker could gain elevated privileges or sensitive information.

Workaround

There is no known workaround at this time.

Resolution

All PolicyKit users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-auth/polkit-0.104-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201204-06.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.