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	[x] Attachment Details

SQL Injection Attack - how to stop it once it's started??

Zones: Networking Security Vulnerabilities, MS SQL Server, SQL Server 2005

Tags: ASP, SQL, MS SQL 2005, www.bestaviation.net & aviationcareerguide.com

Hello,

I have fallen victim to an SQL injection attack (or what seems to be) and have had three Tables in a database corrupted with a script string reading <script src=http://www.banner82.com/b.js></script> and placing itself in every row and as many columns as it can.

I believe it may be caused by poor coding on my part (ie. not using parameterized coding in my SQL statements) but what I cannot figure out is how it manages to carry on. I have done the following preventive measures

1) Restored old Table in a new Table under a different name
2) Renamed every column in the new table

But before I have even managed to get around to changing the ASP code on my website to reflect these changes the data in the new table is getting corrupted!!

Only three Tables (out of many more) are affected but these are the three tables normally executed when a user is on my website - however the new table with the restored data has not been executed through my website yet at all! As far as any web user is concerned it doesn't even exist (I only just created the damn thing).

Can anyone give me a clue as to how it does it and how it manages to do it with such lightning speed???

No point restoring a DB if I can't stop it from corrupting itself the very next minute...

I use MS SQL 2005 on a Windows Server 2003 - my coding language is ASP

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Related Solutions: Cleaning Up SQL Injection Attack - http://www.banner82.com/b.js script

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9.4

Question Stats

Zone: Security

Question Asked By: BestAviation

Solution Provided By: chapmandew

Participating Experts: 9

Solution Grade: B

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Open Discussion

Comment by hibridassassin

gdigital,

I am getting tons of false positives so I agree with you...unfortunately, we are in the process of moving over to asp.net to prevent this sort of thing and until then, we just made it a policy that you can't use words with the contain the stuff on the blacklist. It's a pain but we jsut decided to bite the bullet...I am interested to see what response you get to your question because applying some logic to see if more than one of the words in the blacklist are found sounds like a good idea.

20080723-EE-VQP-34 / EE_QW_2_20070628