GLSA 201003-01: sudo: Privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	sudo: Privilege escalation
Date:	03/03/2010
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	Architecture(s)
app-admin/sudo	< 1.7.2_p4	>= 1.7.2_p4	All supported architectures

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

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.