In response to all the Mass SQL Injection attacks this year, Microsoft approached HP and the Web Security Research Group (formerly SPI Labs) for assistance. While there was nothing they could patch, Microsoft wanted to provide tools to help developers find and fix these issues. After a month of development HP created Scrawlr.

Scrawlr (short for SQL Injector and Crawler) is a free tool that will crawl a website while simultaneously analyzing the parameters of each individual web page for SQL Injection vulnerabilities. Scrawlr was designed specifically to help protect against these mass injection attack which are using Google queries to find older web applications and automatically injection them. As such, Scrawlr crawls a websites using the same techniques as a search engine: it doesn’t keep state, or submit forms, or execute JavaScript or Flash. This Scrawl is finding and auditing the pages that would have been indexed by the search engines.

To reduce false positives Scrawlr provides proof of the vulnerability results by displaying the type of backend database in use and a list of available table names. There is no denying you have SQL Injection when I can show you table names!

Microsoft Advisory
HP Web Security Research Group Blog
Scrawlr Download
Scrawlr FAQ