While these rules do not make your server impervious to attacks, they greatly increase the amount of protection for your web applications. If your webapp has been tested and the audit log does not have any new entries, the security engine can be enabled. The OWASP (Open Web Application Security Project) ModSecurity CRS (Core Rule Set) is a set of rules that Apache’s ModSecurity module can use to help protect your server.
Modsecurity owasp crs update#
Now you would decide wether to disable this rule by updating the etc/modsecurity/nf file or update your webapp. I'm getting into OWASP CRS with ModSecurity and was investigating the way OWASP calculate the anomaly score in the nf they set the following lines : and in the nf they do the following : SecRule TX:PARANOIALEVEL 'ge 1' \ 'id:949060. Īn XSS attack has been detected by rule number 941100. OWASP CRS Anamoly scoring, ModSecurity WAF. Here is a tree view of what we are going to create: Our example projects consists of various files. This guide assumes that Docker and Docker Compose is installed and you know your way around Git, Docker containers, Bash, web servers and log files. OWASP - ModSecurity Core Rule Set Prerequisites OWASP is a non-profit organization that works to improve the security of software.Ĭore Rule Set (CRS) is a set of generic attack detection rules for use with ModSecurity or compatible web application firewalls. ModSecurity is an open source, cross-platform web application firewall module. Compared to normal firewalls WAFs do not protect internet traffic (ISO layer 3 and 4) but protect http/s traffic (layer 7). In order to become useful, ModSecurity must be configured with rules. It can serve static content, process https requests and do much more. ModSecurity is a web application firewall engine that provides very little protection on its own. Termsįor better understanding of what is going on here we have to define some terms. Everything will be done using Open Source tools only. We are going to setup a Docker Compose project and deploy a ModSecurity enabled Nginx container with the CRS. In order to enable users to take full advantage of ModSecurity out of the box, Trustwaves SpiderLabs created the OWASP ModSecurity Core Rule Set (CRS).
Modsecurity owasp crs how to#
This tutorial explains how to enable and test the Open Web Application Security Project Core Rule Set (OWASP CRS) for use with the Nginx and ModSecurity. Janik Vonrotz - Nginx WAF with ModSecurity and OWASP CRS Janik Vonrotz Home /ĥ min read Nginx WAF with ModSecurity and OWASP CRS February 26, 2020