Spiders an HTTP server looking for URLs containing queries vulnerable to an SQL injection attack. The script spiders an HTTP server looking for URLs containing queries. It then proceeds to combine crafted SQL commands with susceptible URLs in order to obtain errors. The errors are analysed to see if the URL is vulnerable to attack. This uses the most basic form of SQL injection but anything more complicated is better suited to a standalone tool. Both meta-style and HTTP redirects are supported. We may not have access to the target web server's true hostname, which can prevent access to virtually hosted sites. This script only follows absolute links when the host name component is the same as the target server's reverse-DNS name. SYNTAX: http.pipeline: If set, it represents the number of HTTP requests that'll be pipelined (ie, sent in a single request). This can be set low to make debugging easier, or it can be set high to test how a server reacts (its chosen max is ignored). http.useragent: The value of the User-Agent header field sent with requests. By default it is ''Mozilla/5.0 (compatible Nmap Scripting Engine http://nmap.org/book/nse.html)''. A value of the empty string disables sending the User-Agent header field. sql-injection.start: The path at which to start spidering default '/'. http-max-cache-size: The maximum memory size (in bytes) of the cache. sql-injection.maxdepth: The maximum depth to spider default 10.