CVE-2009-0362

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.
Severity
UNKNOWN
AV:N/AC:L/Au:S/C:N/I:N/A:P
Atk. Vector
NETWORK
Atk. Complexity
LOW
Base Score
CVSS 3.x
EPSS Score
Percentile: 72%
VendorProductVersion
fail2banfail2ban
0.8.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
fail2ban
bullseye
0.11.2-2
fixed
bookworm
1.0.2-2
fixed
sid
1.1.0-7
fixed
trixie
1.1.0-7
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
fail2ban
oneiric
not-affected
natty
not-affected
maverick
not-affected
lucid
not-affected
karmic
not-affected
jaunty
ignored
intrepid
ignored
hardy
ignored
gutsy
ignored
dapper
ignored