[gentoo-announce] [ GLSA 201203-06 ] sudo: Privilege escalation

[news 28]

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Gentoo Linux Security Advisory GLSA 201203-06

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http://security.gentoo.org/

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Severity: High

Title: sudo: Privilege escalation

Date: March 06, 2012

Bugs: #351490, #401533

ID: 201203-06

 

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Synopsis

========

 

Two vulnerabilities have been discovered in sudo, allowing local

attackers to possibly gain escalated privileges.

 

Background

==========

 

sudo allows a system administrator to give users the ability to run

commands as other users.

 

Affected packages

=================

 

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

Package / Vulnerable / Unaffected

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

1 app-admin/sudo < 1.8.3_p2 >= 1.8.3_p2

*>= 1.7.4_p5

 

Description

===========

 

Two vulnerabilities have been discovered in sudo:

 

* When the sudoers file is configured with a Runas group, sudo does not

prompt for a password when changing to the new group (CVE-2011-0010).

* A format string vulnerability exists in the "sudo_debug()" function

(CVE-2012-0809).

 

Impact

======

 

A local attacker could possibly gain the ability to run arbitrary

commands with the privileges of other users or groups, including root.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All sudo users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.3_p2"

 

References

==========

 

[ 1 ] CVE-2011-0010

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0010

[ 2 ] CVE-2012-0809

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0809

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-201203-06.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