A multi-agent scanner to detect stored-XSS vulnerabilities

The cross-site scripting (XSS) has become a common vulnerability of many web sites and web applications. XSS consists in the exploitation of input validation flaws, with the purpose of injecting arbitrary script code which is later executed at the web browser of the victim. One interesting possibility to prevent this type of vulnerability is the use of vulnerability scanners. However, current scanners are capable of detecting just one of the two main modalities of XSS attacks. This paper introduces a novel multi-agent system for the automated scanning of web sites to detect the presence of XSS vulnerabilities exploitable by an stored-XSS attack. The rate of detection of the system is evaluated in two different scenarios.