ModSecurity is an Apache web server module that provides a web application firewall engine. The ModSecurity Rules Language engine is extrememly flexible and robust and has been referred to as the “Swiss Army Knife of web application firewalls.” While this is certainly true, it doesn’t do much implicitly on its own and requires rules to tell it what to do. In order to enable users to take full advantage of ModSecurity out of the box, we have developed the Core Rule Set (CRS) which provides critical protections against attacks across most every web architecture.
Unlike intrusion detection and prevention systems, which rely on signatures specific to known vulnerabilities, the CRS is based on generic rules which focus on attack payload identification in order to provide protection from zero day and unknown vulnerabilities often found in web applications, which are in most cases custom coded.
Improvements made in v2.0.8:
- Updated the PHPIDS filters
- Updated the SQL Injection filters to detect boolean attacks (1<2, foo == bar, etc..)
- Updated the SQL Injection filters to account for different quotes
- Added UTF-8 encoding validation support to the modsecurity_crs_10_config.conf file
- Added Rule ID 950109 to detect multiple URL encodings
- Added two experimental rules to detect anomalous use of special characters
Download OWASP ModSecurity Core Rule Set (CRS) v2.0.8 Here
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