CVE-2007-5715

DenyHosts 2.6 processes OpenSSH sshd “not listed in AllowUsers” log
messages with an incorrect regular expression that does not match an IP
address, which might allow remote attackers to avoid detection and blocking
when making invalid login attempts with a username not present in
AllowUsers, as demonstrated by the root username, a different vulnerability
than CVE-2007-4323.

Bugs

• <https://bugs.launchpad.net/ubuntu/+source/denyhosts/+bug/133569&gt;