VULNERABILITY INTELLIGENCE

CVE-2009-0362

CVSS score4 MEDIUM
EPSS probability1.30%
CISA KEVNot currently listed
Published2009-02-13
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:S/C:N/I:N/A:P

Description

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.

Weakness classification

  • CWE-287: Improper Authentication

Primary references