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SpiderLabs Blog

Announcing Release of OWASP ModSecurity Core Rule Set v2.1.0

I am pleased to announce the release of the OWASP ModSecurity Core Rule Set (CRS) v2.1.0. This is a significant update as we have added many new capabilities.



Version 2.1.0 - 12/29/2010



- Added Experimental Lua Converter script to normalize payloads. Based on PHPIDS Converter code and it used with the advanced filters conf file.

- Changed the name of PHPIDS converted rules to Advanced Filters

- Added Ignore Static Content (Performance enhancement) rule set

- Added XML Enabler (Web Services) rule set which will parse XML data

- Added Authorized Vulnerability Scanning (AVS) Whitelist rule set

- Added Denial of Service (DoS) Protection rule set

- Added Slow HTTP DoS (Connection Consumption) Protection rule set

- Added Brute Force Attack Protection rule set

- Added Session Hijacking Detection rule set

- Added Username Tracking rule set

- Added Authentication Tracking rule set

- Added Anti-Virus Scanning of File Attachments rule set

- Added AV Scanning program to /util directory

- Added Credit Card Usage Tracking/Leakage Prevention rule set

- Added experimental CC Track/PAN Leakage Prevention rule set

- Added an experimental_rules directory to hold new BETA rules

- Moved the local exceptions conf file back into base_rules dirctory however it has a ".example" extension to prevent overwriting customized versions when upgrading

- Separated out HTTP Parameter Pollution and Restricted Character Anomaly Detection rules to the experimental_rules directory

- Adding the REQUEST_HEADERS:User-Agent macro data to the initcol in 10 config file, which will help to make collections a bit more unique




Manual Downloading:

You can always download the latest CRS version here -


Automated Downloading:

Use the script in the CRS /util directory


# Get a list of what the repository contains:

$ ./ -r -l




modsecurity-crs {















# Get the latest stable version of "modsecurity-crs":

$ ./ -r -prules -Smodsecurity-crs

Fetching: modsecurity-crs/ ...

$ ls -R rules




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