[ GLSA 200506-22 ] sudo: Arbitrary command execution

[GLSA]

Gentoo Linux Security Advisory

Title: sudo: Arbitrary command execution (GLSA 200506-22)
Severity: normal
Exploitable: local
Date: June 23, 2005
Bug(s): #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: app-admin/sudo
Vulnerable: < 1.6.8_p9
Unaffected: >= 1.6.8_p9
Architectures: 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: