[gentoo-announce] [ GLSA 201204-06 ] PolicyKit: Multiple vulnerabilities

[news 28]

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Gentoo Linux Security Advisory GLSA 201204-06

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http://security.gentoo.org/

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Severity: High

Title: PolicyKit: Multiple vulnerabilities

Date: April 17, 2012

Bugs: #314535, #364973, #401513

ID: 201204-06

 

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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

-------------------------------------------------------------------

1 sys-auth/polkit < 0.104-r1 >= 0.104-r1

 

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

==========

 

[ 1 ] CVE-2010-0750

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0750

[ 2 ] CVE-2011-1485

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1485

[ 3 ] CVE-2011-4945

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4945

 

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 ( -at -) gentoo.org or alternatively, you may file a bug at

https://bugs.gentoo.org.

 

License

=======

 

Copyright 2012 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5