Long story short, I'm unofficially the hacker at our office... Story time!

So I was hired three months ago to work for my current company, and after the three weeks of training I got assigned a project with an architect (who only works on the project very occasionally). I was tasked with revamping and implementing new features for an existing API, some of the code dated back to 2013. (important, keep this in mind)

So at one point I was testing the existing endpoints, because part of the project was automating tests using postman, and I saw something sketchy. So very sketchy. The method I was looking at took a POJO as an argument, extracted the ID of the user from it, looked the user up, and then updated the info of the looked up user with the POJO. So I tried sending a JSON with the info of my user, but the ID of another user. And voila, I overwrote his data.

Once I reported this (which took a while to be taken seriously because I was so new) I found out that this might be useful for sysadmins to have, so it wasn't completely horrible. However, the endpoint required no Auth to use. An anonymous curl request could overwrite any users data.

As this mess unfolded and we notified the higher ups, another architect jumped in to fix the mess and we found that you could also fetch the data of any user by knowing his ID, and overwrite his credit/debit cards. And well, the ID of the users were alphanumerical strings, which I thought would make it harder to abuse, but then realized all the IDs were sequentially generated... Again, these endpoints required no authentication.

So anyways. Panic ensued, systems people at HQ had to work that weekend, two hot fixes had to be delivered, and now they think I'm a hacker... I did go on to discover some other vulnerabilities, but nothing major.

It still amsues me they think I'm a hacker 😂😂 when I know about as much about hacking as the next guy at the office, but anyways, makes for a good story and I laugh every time I hear them call me a hacker. The whole thing was pretty amusing, they supposedly have security audits and QA, but for five years, these massive security holes went undetected... And our client is a massive company in my country... So, let's hope no one found it before I did.