After a long break from challenges and CTFs, I felt it was time to start training again. The urge came earlier this month, following some introspection on how little I had been dedicating to such exercises, a realization that left me with a sense of.. guilt? I then visited the Intigriti Discord server, hoping to find an ongoing challenge, but nothing was happening at that time. So, I was eagerly…
Recently, I received a bounty for a vulnerability discovered on an e-commerce site allowing the personal information — including the delivery address — of a user to be changed. Let’s talk about it!
Let me explain how did I overcome this XSS challenge set up by the bug bounty platform Intigriti. It may be a source of inspiration for some of you during your research.
Let’s take a closer look at how cache poisoning works and how I was able to exploit this vulnerability to get a DOS on the home page of a large company.