Tuesday, January 12, 2010

More about Sql Injection

"Sql Injection" is subset of the an unverified/unsanitized user input vulnerability ("buffer overflows" are a different subset), and the idea is to convince the application to run sql code thet was not intended. If the application is creating Sql strings naively on the fly and then running them, its straightforward to create some real surprises.

We'll note that this was a somewhat winding road with more than one wrong turn, and others with more experience will certainly have different and better approaches. But the fact that we were successful does suggest that we were not entirely misguided.

There have been other papers on Sql injection, including that are much more detailed, but this one shows the rationale of discovery as much as the process of exploitation.

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