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hacking: security in practice
A Quick Guide to Bug Bounty Submissions

Hi, I just came across a post about someone that felt like they were unjustly not compensated for a bug submitted on a bug bounty program and I realized that a lot of people in the comments don't understand how vulnerabilities are classified and, therefore how much they are worth. So I decided to write this quick post to try to make it simple to everyone.

Disclaimer: not all bug bounty programs have the same rules, this is just a general guide about the most common ones.

First, every program has a scope. Both in terms of endpoints and in terms of types of vulnerabilities. If your bug affects a endpoint that is out of scope, you won't get paid.

Now, the most important part and the part that people seem to find trickier:

The severity of a bug is calculated using the CVSS score. This score is based on CIA, which stands for confidentiality, integrity and availability of data. That means that all of these are considered to have ZERO IMPACT:

* A bug that affects a company's reputation
* A bug that causes spam on the users
* A bug that causes a financial loss

Those vulnerabilities, while they could feel like they would make a good report, have no impact on data which is usually what determines if a bug is worth money or not.

So before you work for a long time on a bug and on a report, ask yourself these questions:

* does this bug affect a endpoint that is explicitly in scope ?
* is this bug part of a list of bugs that aren't accepted in this program ?
* can I see, change or delete some data that I shouldn't have the right to ?

If you answered no to one of these questions, your bug is probably not going to get paid.

As a last note, if you find a bug that, let's say, causes a financial loss on the company, I encourage you to disclose it. You are probably not entitled to a compensation but the company might still give you a bounty or something to thank you for your report, even if it does not qualify for a normal remuneration. They don't have to, but this is still fairly common.

Always remember that the people that review bug bounty submissions are usually also bug bounty hunters in their spare time.

submitted by /u/PetiteGousseDAil
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