CVE-2009-0362 — MEDIUM (4.0)

Vulnerability 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.

CVSS Score

4.0

MEDIUM

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

Confidentiality

NONE

Integrity

NONE

Availability

PARTIAL

Affected Products

Vendor	Product	Versions
Fail2Ban	Fail2Ban	0.8.3

Related Weaknesses (CWE)

CWE-287

References

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

FAQ

What is CVE-2009-0362?

CVE-2009-0362 is a vulnerability with a CVSS score of 4.0 (MEDIUM). 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 DN...

How severe is CVE-2009-0362?

CVE-2009-0362 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2009-0362?

Check the references section above for vendor advisories and patch information. Affected products include: Fail2Ban Fail2Ban.