![]() (replacement of a regular expression with the empty string). The given example works in case of excessive cleaning of incoming data Instead of construction /**/, any symbol sequence that WAF cuts off Similarly, the following request doesn’t allow anyone to conduct an.The given example works in case of cleaning of dangerous traffic, not inĬase of blocking the entire request or the attack source.Įxample Number (2) of a vulnerability in the function of request After being processed by WAF, the request will become.Will be successfully performed /?id=1/*union*/union/*select*/select+1,2,3/* If there is a corresponding vulnerability in the WAF, this request.The following request doesn’t allow anyone to conduct an attack.Example: (MySQL): SELECT * from table where id = 1 union select 1,2,3Įxample: (PostgreSQL): SELECT * from table where id = 1 select 1,2,3īypassing WAF: SQL Injection - Normalization MethodĮxample Number (1) of a vulnerability in the function of request
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