November 2018
Beginner to intermediate
270 pages
7h 53m
English
Content preview from Bug Bounty Hunting Essentials
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XML External Entity Vulnerability
Extensible Markup Language (XML) is a language that allows users to create a set of rules to define documents in human and machine-readable format. The most important thing about XML is its simplicity—you do not need to follow rules, you define the rules.
This flexibility has extended the use of XML in web applications, despite the fact that, over the last two years, other technology, such as JSON, is slowly supplanting XML; however, there are a lot of applications using XML today.
We'll cover the following topics in this chapter:
- How XML works
- Detecting and exploiting an XXE
- XXEs in the wild
- Read access to Google
- Facebook XXE with Word
- Wikiloc XXE
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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.