February 2019
Beginner to intermediate
366 pages
7h 49m
English
book
Hands-On Application Penetration Testing with Burp Suite
by Carlos A. Lozano, Dhruv Shah, Riyaz Ahemed Walikar
Content preview from Hands-On Application Penetration Testing with Burp Suite
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Manual detection
To detect command injection vulnerabilities, open Burp Suite and intercept the request where you think there is a potential vulnerability.
We think there is a vulnerability in the IP parameter. The normal application's flow is that the user inserts an IP address, and then the application executes a ping to this IP address. If we try to imagine what is happening in the backend, we can suppose that the IP parameter is received by a variable in PHP; then it is concatenated with the string ping to create a string that contains the command and the IP address.
Finally, this complete string is passed as a parameter to a function in charge to execute in a low-level command. So, if the IP parameter is not validated in a correct way ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.