[ GLSA 201204-06 ] PolicyKit: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: PolicyKit: Multiple vulnerabilities (GLSA 201204-06)
Severity: high
Exploitable: local
Date: April 17, 2012
Bug(s): #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: sys-auth/polkit
Vulnerable: < 0.104-r1
Unaffected: >= 0.104-r1
Architectures: 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: