Jan Pechanec discovered that ssh would forward trusted X11 cookies when untrusted cookie generation failed. This could lead to unintended privileges being forwarded to a remote host.
The problem can be corrected by updating your system to the following package versions:
9 January 2008
A security issue affects these releases of Ubuntu and its derivatives:
Jan Pechanec discovered that ssh would forward trusted X11 cookies when untrusted cookie generation failed. This could lead to unintended privileges being forwarded to a remote host.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the necessary changes.
Vulmon