Jonathan Metzman

Authored Publications
Google Publications
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    On the Reliability of Coverage-Based Fuzzer Benchmarking
    Marcel Böhme
    Proceedings of the 44th International Conference on Software Engineering (ICSE'22), IEEE(2022)
    Preview abstract Given a program where none of our fuzzers finds any bugs, how do we know which fuzzer is better? In practice, we often look to code coverage as a proxy measure of fuzzer effectiveness and consider the fuzzer which achieves more coverage as the better one. Indeed, evaluating 10 fuzzers for 23 hours on 24 programs, we find that a fuzzer that covers more code also finds more bugs. There is a very strong correlation between the coverage achieved and the number of bugs found by a fuzzer. Hence, it might seem reasonable to compare fuzzers in terms of coverage achieved, and from that derive empirical claims about a fuzzer’s superiority at finding bugs. Curiously enough, however, we find no strong agreement on which fuzzer is superior if we compared multiple fuzzers in terms of coverage achieved instead of the number of bugs found. The fuzzer best at achieving coverage, may not be best at finding bugs. View details
    FuzzBench: An Open Fuzzer Benchmarking Platform and Service
    Laurent Maurice Romain Simon
    Read Trevelin Sprabery
    Abhishek Arya
    Proceedings of the 29th ACM Joint Meeting on European Software Engineering Conference and Symposium on the Foundations of Software Engineering, Association for Computing Machinery, New York, NY, USA(2021)
    Preview abstract Fuzzing is a key tool used to reduce bugs in production software. At Google, fuzzing has uncovered tens of thousands of bugs. Fuzzing is also a popular subject of academic research. In 2020 alone, over 120 papers were published on the topic of improving, developing, and evaluating fuzzers and fuzzing techniques. Yet, proper evaluation of fuzzing techniques remains elusive. The community has struggled to converge on methodology and standard tools for fuzzer evaluation. To address this problem, we introduce FuzzBench as an open-source turnkey platform and free service for evaluating fuzzers. It aims to be easy to use, fast, reliable, and provides reproducible experiments. Since its release in March 2020, Fuzzbench has been widely used both in industry and academia, carrying out more than 150 experiments for external users. It has been used by several published and in-the-work papers from academic groups, and has had real impact on the most widely used fuzzing tools in industry. The presented case studies suggest that FuzzBench is on its way to becoming a standard fuzzer benchmarking platform. View details
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