Jazzer is a coverage-guided, in-process fuzzer for the Java Virtual Machine.
It uses runtime code coverage to guide generated and mutated inputs towards unexplored execution paths, crashes and security vulnerabilities.
Based on libFuzzer, the software can run as a standalone command-line tool or integrate with JUnit 5 so fuzz tests reside alongside regular unit tests.
This is free and open source software.
Key Features
- Coverage-guided, in-process fuzzing.
- JUnit 5 integration using the
@FuzzTestannotation. - Standalone command-line operation.
- Regression and fuzzing modes.
- Generates and mutates primitives, strings, arrays and many standard library classes.
- Annotations for constraining generated values and input sizes.
- Accepts seed inputs from JUnit parameter sources.
- Retains inputs that discover new code coverage.
- Saves inputs that reproduce crashes and other failures.
- Built-in detectors for server-side request forgery, path traversal and operating-system command injection.
- Supports libFuzzer command-line options.
- Works with Maven, Gradle and Bazel.
- Supports Linux on x86-64 and ARM64 systems.
- Integration with OSS-Fuzz.
Website: github.com/CodeIntelligenceTesting/jazzer
Support:
Developer: Code Intelligence
License: Apache License 2.0
Jazzer is written in Java. Learn Java with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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