Ubuntu Security Notice USN-566-1
9th January, 2008
openssh vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Software description
- openssh
Details
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.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.10:
- openssh-client 1:4.6p1-5ubuntu0.1
- Ubuntu 7.04:
- openssh-client 1:4.3p2-8ubuntu1.1
- Ubuntu 6.10:
- openssh-client 1:4.3p2-5ubuntu1.1
- Ubuntu 6.06 LTS:
- openssh-client 1:4.2p1-7ubuntu3.2
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.