Mind the Gap: What Working With Developers on Fuzz Tests Taught Us About Coverage Gaps
Can fuzzers generate partial tests that developers find useful enough to complete into functional tests (e.g., by adding assertions)? To address this question, we develop a prototype within the Mozilla ecosystem and open 13 bug reports proposing partial generated tests for currently uncovered code. We found that the majority of the reactions focus on whether the targeted coverage gap is actually worth testing. To investigate further which coverage gaps developers find relevant to close, we design an automated filter to exclude irrelevant coverage gaps before generating tests. From conversations with 13 developers about whether the remaining coverage gaps are worth closing when a partially generated test is available, we learn that the filtering indeed removes clearly non-test-worthy gaps. The developers propose a variety of additional strategies to address the coverage gaps and how to make fuzz tests and reports more useful for developers.
Thu 18 AprDisplayed time zone: Lisbon change
11:00 - 12:30 | Fuzzing 1Software Engineering in Practice / Journal-first Papers / Research Track at Fernando Pessoa Chair(s): Marcel Böhme MPI-SP, Bochum | ||
11:00 15mTalk | Crossover in Parametric Fuzzing Research Track Pre-print Media Attached | ||
11:15 15mTalk | SpecBCFuzz: Fuzzing LTL Solvers with Boundary Conditions Research Track Luiz Carvalho University of Luxembourg, Renzo Degiovanni Luxembourg Institute of Science and Technology, Maxime Cordy University of Luxembourg, Luxembourg, Nazareno Aguirre University of Rio Cuarto and CONICET, Yves Le Traon University of Luxembourg, Luxembourg, Mike Papadakis University of Luxembourg | ||
11:30 15mTalk | EDEFuzz: A Web API Fuzzer for Excessive Data Exposures Research Track Lianglu Pan University of Melbourne, Shaanan Cohney University of Melbourne, Toby Murray University of Melbourne, Thuan Pham The University of Melbourne | ||
11:45 15mTalk | ECFuzz: Effective Configuration Fuzzing for Large-Scale Systems Research Track Junqiang Li University of Electronic Science and Technology of China, Senyi Li University of Electronic Science and Technology of China, Keyao Li University of Electronic Science and Technology of China, Falin Luo University of Electronic Science and Technology of China, Hongfang Yu University of Electronic Science and Technology of China, Shanshan Li National University of Defense Technology, Xiang Li Academy of Military Sciences DOI Media Attached File Attached | ||
12:00 15mTalk | Mind the Gap: What Working With Developers on Fuzz Tests Taught Us About Coverage Gaps Software Engineering in Practice Carolin Brandt Delft University of Technology, Marco Castelluccio Mozilla, Christian Holler Mozilla Corporation, Jason Kratzer Mozilla Corporation, Andy Zaidman Delft University of Technology, Alberto Bacchelli University of Zurich DOI Pre-print | ||
12:15 7mTalk | CLFuzz: Vulnerability Detection of Cryptographic Algorithm Implementation via Semantic-Aware Fuzzing Journal-first Papers Yuanhang Zhou Tsinghua University, Fuchen Ma Tsinghua University, Yuanliang Chen Tsinghua University, Meng Ren Tsinghua University, Yu Jiang Tsinghua University | ||
12:22 7mTalk | FormatFuzzer: Effective Fuzzing of Binary File Formats Journal-first Papers Rafael Dutra CISPA Helmholtz Center for Information Security, Rahul Gopinath University of Sydney, Andreas Zeller CISPA Helmholtz Center for Information Security | ||