[ GLSA 201406-27 ] polkit, Spice-Gtk, systemd, HPLIP, libvirt: Privilege escalation

[GLSA]

Gentoo Linux Security Advisory

Title: polkit, Spice-Gtk, systemd, HPLIP, libvirt: Privilege escalation (GLSA 201406-27)
Severity: high
Exploitable: local
Date: June 26, 2014
Bug(s): #484486, #484488, #485420, #485546, #485904
ID: 201406-27

Synopsis

A race condition in polkit could allow a local attacker to gain
escalated privileges.


Background

polkit is a toolkit for managing policies relating to unprivileged
processes communicating with privileged processes.


Affected Packages

Package: net-print/hplip
Vulnerable: < 3.14.1
Unaffected: >= 3.14.1
Architectures: All supported architectures

Package: net-misc/spice-gtk
Vulnerable: < 0.21
Unaffected: >= 0.21
Architectures: All supported architectures

Package: sys-apps/systemd
Vulnerable: < 204-r1
Unaffected: >= 204-r1
Architectures: All supported architectures

Package: app-emulation/libvirt
Vulnerable: < 1.1.2-r3
Unaffected: >= 1.1.2-r3
Architectures: All supported architectures

Package: sys-auth/polkit
Vulnerable: < 0.112
Unaffected: >= 0.112
Architectures: All supported architectures


Description

polkit has a race condition which potentially allows a process to change
its UID/EUID via suid or pkexec before authentication is completed.


Impact

A local attacker could start a suid or pkexec process through a
polkit-enabled application, which could result in privilege escalation or
bypass of polkit restrictions.


Workaround

There is no known workaround at this time.

Resolution

All polkit users should upgrade to the latest version: