GLSA 200902-01: sudo: Privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	sudo: Privilege escalation
Date:	02/06/2009
Bugs:	#256633
ID:	200902-01

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	Architecture(s)
app-admin/sudo	< 1.7.0	>= 1.7.0	All supported architectures

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

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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.