CVE-2009-0362

no score yetEPSS 1.3%

filter.d/wuftpd.conf in Fail2ban 0.8.3 uses an incorrect regular expression that allows remote attackers to cause a denial of service (forced authentication failures) via a crafted reverse-resolved DNS name (rhost) entry that contains a substring that is interpreted as an IP address, a different vulnerability than CVE-2007-4321.

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2009-02-13
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

fail2ban:fail2ban

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=514163
http://secunia.com/advisories/33890
http://www.securityfocus.com/bid/33734
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=514163
http://secunia.com/advisories/33890

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