Debian: DSA 459-1 Major Update: OpenSSH Local Privilege Escalation Issue

Two vulnerabilities were discovered in wu-ftpd:

CAN-2004-0148 - Glenn Stewart discovered that users could bypass the
directory access restrictions imposed by the restricted-gid option by
changing the permissions on their home directory. On a subsequent
login, when access to the user's home directory was denied, wu-ftpd
would fall back to the root directory.

CAN-2004-0185 - A buffer overflow existed in wu-ftpd's code which
deals with S/key authentication.

For the stable distribution (woody) these problems have been fixed in
version 2.6.2-3woody4.

For the unstable distribution (sid) these problems have been fixed in
version 2.6.2-17.1.

We recommend that you update your wu-ftpd package.

Upgrade Instructions
- --------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
...