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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fail2ban | Fail2ban | 0.8 (including) | 0.8 (including) |