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.
| Link | Tags |
|---|---|
| http://www.debian.org/security/2008/dsa-1456 | vendor advisory |
| http://secunia.com/advisories/23237 | third party advisory |
| http://osvdb.org/42484 | vdb entry |
| http://www.securityfocus.com/bid/25117 | vdb entry |
| http://secunia.com/advisories/28374 | third party advisory |
| http://bugs.gentoo.org/show_bug.cgi?id=181214 | |
| http://security.gentoo.org/glsa/glsa-200707-13.xml | vendor advisory |
| http://www.ossec.net/en/attacking-loganalysis.html |