CVE-2009-0362

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Summary

CVECVE-2009-0362
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-02-13 01:30:00 UTC
Updated2026-04-23 00:35:47 UTC
Descriptionfilter.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.

Risk And Classification

Primary CVSS: v2.0 4 from [email protected]

AV:N/AC:L/Au:S/C:N/I:N/A:P

Problem Types: CWE-287 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:S/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fail2ban Fail2ban 0.8.3 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Fail2ban "wuftpd.conf" Denial of Service Vulnerability - Advisories - Community af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
Fail2ban 'wuftpd.conf' Remote Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
#514163 - fail2ban: allows DoS via construction of domain names starting with IP of a victim - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Exploit
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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