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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.

POC

Reference

No PoCs from references.

Github

No PoCs found on GitHub currently.

ExploitDB

https://www.exploit-db.com/exploits/30430

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