Input validation error in Fail2ban - CVE-2013-2178
Published: August 29, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42618
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-2178
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fail2ban
Affected software:
Fail2ban
Fail2ban
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The apache-auth.conf, apache-nohome.conf, apache-noscript.conf, and apache-overflows.conf files in Fail2ban before 0.8.10 do not properly validate log messages, which allows remote attackers to block arbitrary IP addresses via certain messages in a request.
How to mitigate CVE-2013-2178
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-updates/2014-03/msg00021.html
- http://www.debian.org/security/2013/dsa-2708
- http://www.openwall.com/lists/oss-security/2013/06/13/7
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17338
- https://raw.github.com/fail2ban/fail2ban/master/ChangeLog
- https://vndh.net/note:fail2ban-089-denial-service