GLSA 201009-03: sudo: Privilege Escalation

http://security.gentoo.org/

Severity:	high
Title:	sudo: Privilege Escalation
Date:	09/07/2010
Bugs:	#322517, #335381
ID:	201009-03

Synopsis

The secure path feature and group handling in sudo allow local attackers to escalate privileges.

Background

sudo allows a system administrator to give users the ability to run commands as other users.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-admin/sudo	< 1.7.4_p3-r1	>= 1.7.4_p3-r1	All supported architectures

Description

Multiple vulnerabilities have been reported in sudo:

Evan Broder and Anders Kaseorg of Ksplice, Inc. reported that the sudo 'secure path' feature does not properly handle multiple PATH variables (CVE-2010-1646).
Markus Wuethrich of Swiss Post reported that sudo fails to restrict access when using Runas groups and the group (-g) command line option (CVE-2010-2956).

Impact

A local attacker could exploit these vulnerabilities to gain the ability to run certain commands with the privileges of other users, including root, depending on the configuration.

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-1.7.4_p3-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201009-03.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.