[ GLSA 200902-01 ] sudo: Privilege escalation

[GLSA]

Gentoo Linux Security Advisory

Title: sudo: Privilege escalation (GLSA 200902-01)
Severity: high
Exploitable: local
Date: February 06, 2009
Bug(s): #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: app-admin/sudo
Vulnerable: < 1.7.0
Unaffected: >= 1.7.0
Architectures: 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: