Im trying to get my head around SQL Injection attacks and where to start to identify SQLi vulnerabilities in our own applications. I am not from a web development background, albeit am learning on a daily basis, so could do with some basic pointers to set me on the right track. Basically we have some test applications on a test server which we want to see if there are any SQL injection flaws in them. All our applications were coded in asp.net / c#. Some of the underlying databases are MS Access, whilst others are SQL Server.
My questions are:
1.By viewing a pages source code (view > source in IE), will I be able to get a clue about which stored procedure is being run when a user submits data, or searches for something in the application. Have you any tips on how to find the name of SPs being fired off.
2.Would you say MS Access is more susceptible to SQLi than SQL Server etc. I wasnt aware MS Access could run stored procedures.
3.Which elements need to be reviewed for SQLI flaws, both the web development pages and the SQL query, stored procedure? Anything else?
4.Do you do manual SQLi testing or use any specific freeware tools?
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hmm, there're a lot of tools out there, but ....
in some countries you're allowed to sell, buy and carry pump guns, even use them, but you're not allowed to post links to good tools in a web page (where software is totally virtual compared to the result of shooting someone:); EE does not allow to post links ...
Anyway, searching for w3af, sqlmap, owasp, to mention a few, may help.
> ..not to have to attempt blind sqli testing
LOL, blind sql injections are the most interesting ones, others will the most scary;-)
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by: ahoffmannPosted on 2009-11-04 at 22:52:02ID: 25747239
1. i.g yes, BUT you need to be very experianced to find the proper function calls
you better use SCA tools (source code analyzer) for that, be prepared for $$$$$$
2. depends
3. the web page/script/whatever as it constructs (most likely) the queries, the query itself, *all* (and I really mean all and everything) stored procedures
4. manually, assisted by tools
Keep in mind that stored procedures ar no protection against SQLI, you need to view their source the same way you view your own sources, I guess this will end up in a nightmare at least for M$ and Oracle.
If you want to get an idea how simple SQLI could be exploited (in particular in M$ environments) go and search for sql mapping tools, you get the idea ...