Home / mailings

PDF

[gentoo-announce] [ GLSA 201003-01 ] sudo: Privilege escalation

Posted on 03 March 2010
Gentoo-announce

--Sig_/dG/1X_7pT47E0ZB2F54pv/.
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201003-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: High
Title: sudo: Privilege escalation
Date: March 03, 2010
Bugs: #306865
ID: 201003-01

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

Synopsis
========
Two vulnerabilities in sudo might allow local users to escalate
privileges and execute arbitrary code with root 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 < 1.7.2_p4 >= 1.7.2_p4

Description
===========
Multiple vulnerabilities have been discovered in sudo:

* Glenn Waller and neonsignal reported that sudo does not properly
handle access control of the "sudoedit" pseudo-command
(CVE-2010-0426).

* Harald Koenig reported that sudo does not properly set
supplementary groups when using the "runas_default" option
(CVE-2010-0427).

Impact
======
A local attacker with privileges to use "sudoedit" or the privilege to
execute commands with the "runas_default" setting enabled could
leverage these vulnerabilities to execute arbitrary code with elevated
privileges.

Workaround
==========
CVE-2010-0426: Revoke all "sudoedit" privileges, or use the full path
to sudoedit. CVE-2010-0427: Remove all occurrences of the
"runas_default" setting.

Resolution
==========
All sudo users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.7.2_p4"

References
==========
[ 1 ] CVE-2010-0426
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0426
[ 2 ] CVE-2010-0427
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0427

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201003-01.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@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2010 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

--Sig_/dG/1X_7pT47E0ZB2F54pv/.
Content-Type: application/pgp-signature; name=signature.asc
Content-Disposition: attachment; filename=signature.asc

 

TOP