February 2018
Beginner to intermediate
426 pages
10h 25m
English
book
Web Penetration Testing with Kali Linux - Third Edition
by Daniel W. Dieterle, Gilberto Najera-Gutierrez, Juned Ahmed Ansari
Content preview from Web Penetration Testing with Kali Linux - Third Edition
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Exploiting shellshock
The shellshock vulnerability was discovered in September 2014 and assigned the initial CVE identifier 2014-6271. Shellshock is an Arbitrary Code Execution (ACE) vulnerability, and it was considered one of the most serious flaws ever discovered.
The flaw was found in the way the Bourne Again Shell (bash) processes environment variables, and it affects a wide range of applications and operating systems that use bash as an interface to the operating system. Code like the DHCP client in most Unix-based systems (including Mac OS X), the command-line terminals, and CGI scripts in web applications were affected. The flaw is triggered when an empty function is set in an environment variable. An empty function looks like this: ...
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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.