CVE-2007-4323

DenyHosts 2.6 does not properly parse sshd log files, which allows remote
attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a
denial of service by adding arbitrary IP addresses to the sshd log file, as
demonstrated by logging in via ssh with a client protocol version
identification containing an IP address string, a different vector than
CVE-2006-6301.

Bugs

• <https://bugs.launchpad.net/ubuntu/+source/denyhosts/+bug/162406&gt;