Ruby on Rails String Interpolation led to Remote Code Execution

13-Mar-2017 3589
@nahamsec and I discovered a Cross-Site Scripting vulnerability a few months ago related to Rails typecasting request variables into JSON. This caused the output to be JSON formatted and the JSON indexes would avoid XSS encoding. We decided to run with this concept and explore the rest of the website to see if we could identify other vulnerabilities using the same method.
Use coupon code:

RUBYONRAILS

to get 30% discount on our bundle!
Prepare for your next tech interview with our comprehensive collection of programming interview guides. Covering JavaScript, Ruby on Rails, React, and Python, these highly-rated books offer thousands of essential questions and answers to boost your interview success. Buy our 'Ultimate Job Interview Preparation eBook Bundle' featuring 2200+ questions across multiple languages. Ultimate Job Interview Preparation eBook Bundle