June 2019
Intermediate to advanced
264 pages
7h 4m
English
Content preview from Real-World Bug Hunting
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12REMOTE CODE EXECUTION
A remote code execution (RCE) vulnerability occurs when an application uses user-controlled input without sanitizing it. RCE is typically exploited in one of two ways. The first is by executing shell commands. The second is by executing functions in the programming language that the vulnerable application uses or relies on.
Executing Shell Commands
You can perform RCE by executing shell commands that the application doesn’t sanitize. A shell gives command line access to an operating system’s services. As an example, let’s pretend the site www.<example>.com is designed to ping a remote server to confirm whether the server ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.