CVE-2007-4321

EPSS 12.1%

fail2ban

Published: 8/14/2007Modified: 4/28/2026
Also known as:DEBIAN-CVE-2007-4321

Description

fail2ban 0.8 and earlier 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-2006-6302.

Affected packages (2)

References (1)