Stephan Plöger, Fraunhofer FKIE; Mischa Meier, University of Bonn; Matthew Smith, University of Bonn, Fraunhofer FKIE
Testing software for bugs and vulnerabilities is an essential aspect of secure software development. Two paradigms are particularly prevalent in this domain: static and dynamic software testing. Static analysis has seen widespread adoption across the industry, while dynamic analysis, in particular fuzzing, has recently received much attention in academic circles as well as being used very successfully by large corporations such as Google, where for instance, over 20,000 bugs have been found and fixed in the Chrome project alone. Despite these kinds of success stories, fuzzing has not yet seen the kind of industry adoption static analysis has.
To get first insights, we examine the usability of the static analyzer Clang Static Analyzer and the fuzzer libFuzzer. To this end, we conducted the first qualitative usability evaluation of the Clang Static Analyzer and libFuzzer. We conducted a mixed factorial design study with 32 CS masters students and six competitive Capture the Flag (CTF) players. Our results show that our participants encountered severe usability issues trying to get libFuzzer to run at all.
In contrast to that, most of our participants were able to run the Clang Static Analyzer without significant problems. This shows that, at least in this case, the usability of libFuzzer was worse than of the Clang Static Analyzer. We make suggestions on how libFuzzer could be improved and how both tools compare.
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