GLSA 200506-22: sudo: Arbitrary command execution

http://security.gentoo.org/

Severity:	normal
Title:	sudo: Arbitrary command execution
Date:	06/23/2005
Bugs:	#96618
ID:	200506-22

Synopsis

A vulnerability in sudo may allow local users to elevate 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	< 1.6.8_p9	>= 1.6.8_p9	All supported architectures

Description

The sudoers file is used to define the actions sudo users are permitted to perform. Charles Morris discovered that a specific layout of the sudoers file could cause the results of an internal check to be clobbered, leaving sudo vulnerable to a race condition.

Impact

Successful exploitation would permit a local sudo user to execute arbitrary commands as another user.

Workaround

Reorder the sudoers file using the visudo utility to ensure the 'ALL' pseudo-command precedes other command definitions.

Resolution

All sudo users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.6.8_p9"

References

Sudo Announcement

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200506-22.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.