USN-841-1: GLib vulnerability

Ubuntu Security Notice USN-841-1

5th October, 2009

glib2.0 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS

Software description

  • glib2.0


Arand Nash discovered that applications linked to GLib (e.g. Nautilus)
did not correctly copy symlinks. If a user copied symlinks with GLib,
the symlink target files would become world-writable, allowing local
attackers to gain access to potentially sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 9.04:
libglib2.0-0 2.20.1-0ubuntu2.1
Ubuntu 8.10:
libglib2.0-0 2.18.2-0ubuntu2.2
Ubuntu 8.04 LTS:
libglib2.0-0 2.16.6-0ubuntu1.2

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to effect
the necessary changes.