Trustwave SpiderLabs Uncovers Ov3r_Stealer Malware Spread via Phishing and Facebook Advertising. Learn More

Trustwave SpiderLabs Uncovers Ov3r_Stealer Malware Spread via Phishing and Facebook Advertising. Learn More

Managed Detection & Response

Eliminate active threats with 24/7 threat detection, investigation, and response.

Co-Managed SOC (SIEM)

Maximize your SIEM investment, stop alert fatigue, and enhance your team with hybrid security operations support.

Advisory & Diagnostics

Advance your cybersecurity program and get expert guidance where you need it most.

Penetration Testing

Test your physical locations and IT infrastructure to shore up weaknesses before exploitation.

Database Security

Prevent unauthorized access and exceed compliance requirements.

Email Security

Stop email threats others miss and secure your organization against the #1 ransomware attack vector.

Digital Forensics & Incident Response

Prepare for the inevitable with 24/7 global breach response in-region and available on-site.

Firewall & Technology Management

Mitigate risk of a cyberattack with 24/7 incident and health monitoring and the latest threat intelligence.

Microsoft Exchange Server Attacks
Stay protected against emerging threats
Rapidly Secure New Environments
Security for rapid response situations
Securing the Cloud
Safely navigate and stay protected
Securing the IoT Landscape
Test, monitor and secure network objects
Why Trustwave
About Us
Awards and Accolades
Trustwave SpiderLabs Team
Trustwave Fusion Security Operations Platform
Trustwave Security Colony
Technology Alliance Partners
Key alliances who align and support our ecosystem of security offerings
Trustwave PartnerOne Program
Join forces with Trustwave to protect against the most advance cybersecurity threats
SpiderLabs Blog

Announcing Release of CRS v2.0.9

Greetings everyone,

I am pleased to announce the release of the OWASP ModSecurity Core Rule Set (CRS) v2.0.9.

The most significant change is that users can now easily toggle between Traditional or Anomaly Scoring Detection modes.



Version 2.0.9 - 11/17/2010




- Changed the name of the main config file to modsecurity_crs_10_config.conf.example so that

it will not overwrite existing config settings. Users should rename this file to activate it.

- Traditional detection mode is now the current default

- Users can now more easily toggle between traditional/standard mode vs. anomaly scoring mode

by editing the modsecurity_crs_10_config.conf file

- Updated the disruptive actions in most rules to use "block" action instead of "pass". This

is to allow for the toggling between traditional vs. anomaly scoring modes.

- Removed logging actions from most rules so that it can be controlled from the SecDefaultAction

setting in the modsecurity_crs_10_config.conf file

- Updated the anomaly scores in the modsecurity_crs_10_config.conf file to more closely match

what is used in the PHPIDS rules. These still have the same factor of severity even though

the numbers themselves are smaller.

- Updated the 49 and 59 blocking rules to include the matched logdata

- Updated the TAG data to further classify attack/vuln categories.

- Updated the SQL Injection filters to detect more boolean logic attacks

- Moved some files to optional_rules directory (phpids, Emerging Threats rules)


Bug Fixes:

- Fixed Rule ID 960023 in optional_rules/modsecurity_crs_40_experimental.conf is missing 1 single quote

- Moved all skipAfter actions in chained rules to the rule starter line (must have ModSec v2.5.13 or higher)

- Fixed restricted file extension bug with macro expansion

- Updated the SQLI TX variable macro expansion data in the 49 and 60 files so that

it matches what is being set in the sql injection conf file

- Fixed typo in SQL Injection regexs - missing backslash for word boundary (\b)





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





Latest SpiderLabs Blogs

Hunting For Integer Overflows In Web Servers

Allow me to set the scene and start proceedings off with a definition of an integer overflow, according to Wikipedia:

Read More

Welcome to Adventures in Cybersecurity: The Defender Series

I’m happy to say I’m done chasing Microsoft certifications (AZ104/AZ500/SC100), and as a result, I’ve had the time to put some effort into a blog series that hopefully will entertain and inform you...

Read More

Trustwave SpiderLabs: Insights and Solutions to Defend Educational Institutions Against Cyber Threats

Security teams responsible for defending educational institutions at higher education and primary school levels often find themselves facing harsh lessons from threat actors who exploit the numerous...

Read More