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[ GLSA 201406-01 ] D-Bus, GLib: Privilege escalation
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PostPosted: Sun Jun 01, 2014 3:26 pm    Post subject: [ GLSA 201406-01 ] D-Bus, GLib: Privilege escalation Reply with quote

Gentoo Linux Security Advisory

Title: D-Bus, GLib: Privilege escalation (GLSA 201406-01)
Severity: high
Exploitable: local
Date: June 01, 2014
Bug(s): #436028
ID: 201406-01

Synopsis

A vulnerability has been found in D-Bus which allows local
attackers to gain escalated privileges.


Background

D-Bus is a daemon providing a framework for applications to communicate
with one another. GLib is a library providing a number of GNOME’s core
objects and functions.


Affected Packages

Package: sys-apps/dbus
Vulnerable: < 1.6.8
Unaffected: >= 1.6.8
Architectures: All supported architectures

Package: dev-libs/glib
Vulnerable: < 2.32.4-r1
Unaffected: >= 2.32.4-r1
Architectures: All supported architectures


Description

When libdbus is used in a setuid program, a user can gain escalated
privileges by leveraging the DBUS_SYSTEM_BUS_ADDRESS variable. GLib can
be used in a setuid context with D-Bus, and so can trigger this
vulnerability. Please review the CVE identifier below for more details.


Impact

A local attacker could gain escalated privileges and execute arbitrary
code.


Workaround

There is no known workaround at this time.

Resolution

All D-Bus users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.6.8"
   
All GLib users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/glib-2.32.4-r1"
   


References

CVE-2012-3524
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