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#  Wednesday, 05 October 2005

David Litchfield published the paper Data-mining with SQL Injection and Inference (more NISR papers). From the abstract: When drilling for data via SQL injection there are three classes of attack – inband, out-of-band and the relatively unknown inference attack. Inband attacks extract data over the same channel between the client and the web server, for example, results are embedded in a web page via a union select. Out-of-band attacks employ a different communications channel to drill for data by using database mail or HTTP functions for example. Inference attacks stand alone in the fact that no actual data is transferred – rather, a difference in the way an application behaves can allow an attacker to infer the value of the data.

Categories: Security | SQL Server
Wednesday, 05 October 2005 23:36:51 (W. Europe Daylight Time, UTC+02:00)  #    Comments [0]

 



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