3 ms·
AFL is not that smart. If you only do bit flippings on the inputs, then fuzzing a JavaScript engine/dom engine will take forever. The "domino" (Mozilla internal
by lqqq 6y ago
AFL is not that smart. If you only do bit flippings on the inputs, then fuzzing a JavaScript engine/dom engine will take forever. The "domino" (Mozilla internal tool) looks quite powerful as it generates semantically correct dom. Sadly, it is not open source. Google has a tool designed specifically to fuzz JavaScript engines, Fuzzilli[1], which hackers have been using for bug hunting.
[1]: https://github.com/googleprojectzero/fuzzilli https://github.com/googleprojectzero/fuzzilli
- pabs3 6y agoI wonder why domino hasn't been released? Is Mozilla selling it to other companies?
- sylvestre 6y agoBecause it often finds security issues in our code: see the graph at the end of the blog post. If opensource, this fuzzer could be used against our users... AFAIK, Mozilla doesn't sell any software!