[gentoo-announce] [ GLSA 200902-01 ] sudo: Privilege escalation

[news 28]

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Gentoo Linux Security Advisory GLSA 200902-01

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http://security.gentoo.org/

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Severity: High

Title: sudo: Privilege escalation

Date: February 06, 2009

Bugs: #256633

ID: 200902-01

 

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Synopsis

========

 

A vulnerability in sudo may allow for privilege escalation.

 

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 < 1.7.0 >= 1.7.0

 

Description

===========

 

Harald Koenig discovered that sudo incorrectly handles group

specifications in Runas_Alias (and related) entries when a group is

specified in the list (using %group syntax, to allow a user to run

commands as any member of that group) and the user is already a member

of that group.

 

Impact

======

 

A local attacker could possibly run commands as an arbitrary system

user (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-1.7.0"

 

References

==========

 

[ 1 ] CVE-2009-0034

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0034

 

Availability

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

 

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

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200902-01.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

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2009 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