SB2013082906 - Input validation error in Fail2ban
Published: August 29, 2013 Updated: August 10, 2020
Security Bulletin ID
SB2013082906
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2013-2178)
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.
Remediation
Install update from vendor's website.
References
- 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