August 2009
Beginner
298 pages
9h 5m
English
Content preview from Hacking: The Next GenerationBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Cross-Site Scripting (XSS)
Cross-site scripting (XSS) is the most popular avenue for attack against the corporate internal network. XSS remains the most popular attack against the masses because it is easy to find and to launch, while the consequences of the attack can be devastating. Although the scope of this chapter is beyond simple XSS tactics, no discussion of client-side exploitation would be complete without a mention of XSS. This section assumes that the reader is familiar with the concept of XSS. The goal of this section is to illustrate how sophisticated attackers today are able to leverage the most out of XSS vulnerabilities.
The amount of data that is passed between users and online applications is staggering. It seems that every significant business function has a web interface to manage various business actions and peruse data. The enormous amount of sensitive information passed in online transactions makes online data theft appealing and lucrative. Of the various online attacks, XSS remains one of the most prolific. Although numerous XSS attack techniques exist, this section will cover a few examples of attacks that focus on stealing user information. These attacks will progress in complexity and can be used as a foundation for more advanced, targeted attacks.
Note
If you are not familiar with XSS, the Wikipedia page at http://en.wikipedia.org/wiki/Cross-site_scripting is a good resource.
Stealing Sessions
Attackers often use XSS to steal user sessions. The following is ...
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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.