Denial of Service Vulnerability in Fail2ban by Faill2ban
CVE-2009-0362

Currently unrated

Key Information:

Vendor: Fail2ban
Status: Fail2ban
Vendor: CVE Published:; 13 February 2009

What is CVE-2009-0362?

Fail2ban version 0.8.3 is susceptible to a denial of service due to an incorrect regular expression configuration in the filter.d/wuftpd.conf file. Attackers can exploit this vulnerability by sending crafted reverse-resolved DNS names. If the rhost entry contains a substring that is interpreted as an IP address, it can lead to forced authentication failures, disrupting service availability.

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