USN-597-1: OpenSSH vulnerability

01 April 2008

OpenSSH vulnerability



  • openssh -


Timo Juhani Lindfors discovered that the OpenSSH client, when port
forwarding was requested, would listen on any available address family.
A local attacker could exploit this flaw on systems with IPv6 enabled
to hijack connections, including X11 forwards.

Update instructions

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

Ubuntu 7.10
Ubuntu 7.04
Ubuntu 6.10
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.