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How to prevent SQL injections

Many applications include code that looks like: 1: string sqlStmt = "SELECT * FROM USERS WHERE UserName= '" + un + "' AND Password='" + pwd + "'" ; Admit it...it's ugly, but you constructed SQL statements like this one. The variables un,pwd are provided by the user. The problem with this SQL string is that the attacker can piggyback SQL statements in one of them. What if the attacker enters this: un = maor, pwd = 123456' OR 1=1 . The following...

Posted 20 October 2007 01:34 AM by Maor David-Pur | 5 comment(s)

תגים:.NET, C#, Security, SQL Injection

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