Saturday, February 11, 2017

Vulnerability disclosure in an era of vulnerability rewards

Note: This (and every post in this blog) is a personal blog post which expresses my personal opinion, and doesn't necessarily have to be the same opinion as my employer.

Recently a few bug hunters have been taking rounds around the internet, looking for vulnerabilities and then contacting the website owner asking for money to disclose these to them. This prompted a discussion on Twitter which I thought was interesting.

What we know today as Bug Bounty Programs (or more aptly named, Vulnerability Reward Programs), was started by some individuals proactively searching for vulnerabilities on their time for fun, curiosity or to evaluate the security of the software they use, and then reported them publicly or privately to the vendors. In many cases, these bug hunters got no permission or blessing from the vendor ahead of time, but vendors thought that activity was useful for them, so they decided to formalize it and launched reward programs. Fast forward to 2017 and tens of millions of dollars have been paid to thousands of bug hunters all around the world. That turned out pretty well, after all.

However, this created a new normal, where bug hunters might expect to get paid for their research "per bug". And consequently, this also created an incentive for a few bug hunters to reach out to vendors without these programs with the purpose of hoping they can convince the vendor to start one. I don't think the bug hunters doing that are "bad people". What they are doing is slightly better than sitting on the bugs, or sharing them on private forums as it used to be the norm 10 years ago, and while I definitely think they should be disclosing the vulns and getting them fixed, I respect their freedom not to.

That said, this left those vendors without reward programs (either for lack of money, or lack of support) at odds, in that they get the worst of both worlds. Little attention from skilled professional bug hunters and tons of attention by those that are just looking to make money out of it. And at least some of those vendors, ended up perceiving the behavior as extortion.

This can result in a very dangerous "us vs. them" mentality. We shouldn't be fighting with each other on this. We shouldn't be calling each other scammers. That has the only side effect of burning bridges and alienating the bug hunters we need to work the most closely with.

What I think we should do, as vendors, is politely and consistently decline every attempt to disclose issues in a way that is unfair or dangerous to users and other bug hunters. That means, if you can't give out rewards , don't cave in for those asking you for money by email. If you already have a reward program, don't bend or change the rules for these people.

Instead, we, as vendors, have to invest to create a community of bug hunters around us. Many people are willing to invest time to help vendors, even when money is not involved. Reasons for that vary (they do it for the challenge, curiosity, or fun), and in exchange for their help, many of them often appreciate a "thank you" as appreciation, and recognition in some advisory. Vendors need to be welcoming, transparent and appreciative. This is important for any vendor that wants to collaborate with independent security researchers, even more important for those vendors just starting to build their community, and specially important for those that need a lot of help and don't have much resources.

What I think we should do, as security researchers, is to not let a few vendors give the wrong impression of the rest of the industry. We should continue to be curious, and continue to advance the state of the art. However, just as jaywalking carries risks, we need to be careful on how we do this work. Pentesting without authorization is very risky, even more so if the testing causes damage, or gives the impression it was malicious.

Instead, as researchers we should treat vendors as we would treat our neighbors and be respectful and polite, not doing to them what you wouldn't want them to do to you. I think 99.99% of researchers already behave like this, and the few that don't are just learning. Let's make sure we continue to grow our community with respect and humility and help those that are just starting.

The security disclosure world of today is a lot better than how it was 10 to 20 years ago, and I'm glad to see such great relationships between vendors and security researchers. Let's keep on improving it 😊.

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