OSS-Fuzz - continuous fuzzing for open source software.

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README.md

OSS-Fuzz: Continuous Fuzzing for Open Source Software

Fuzz testing is a well-known technique for uncovering programming errors in software. Many of these detectable errors, like buffer overflow, can have serious security implications. Google has found thousands of security vulnerabilities and stability bugs by deploying guided in-process fuzzing of Chrome components, and we now want to share that service with the open source community.

In cooperation with the Core Infrastructure Initiative and the OpenSSF, OSS-Fuzz aims to make common open source software more secure and stable by combining modern fuzzing techniques with scalable, distributed execution. Projects that do not qualify for OSS-Fuzz (e.g. closed source) can run their own instances of ClusterFuzz or ClusterFuzzLite.

We support the libFuzzer, AFL++, and Honggfuzz fuzzing engines in combination with Sanitizers, as well as ClusterFuzz, a distributed fuzzer execution environment and reporting tool.

Currently, OSS-Fuzz supports C/C++, Rust, Go, Python, Java/JVM, and JavaScript code. Other languages supported by LLVM may work too. OSS-Fuzz supports fuzzing x86_64 and i386 builds.

Overview

Documentation

Read our detailed documentation to learn how to use OSS-Fuzz.

Trophies

As of February 2023, OSS-Fuzz has helped identify and fix over 8,900 vulnerabilities and 28,000 bugs across 850 projects.

Blog posts

2016-12-01 - Announcing OSS-Fuzz: Continuous fuzzing for open source software
2017-05-08 - OSS-Fuzz: Five months later, and rewarding projects
2018-11-06 - A New Chapter for OSS-Fuzz
2020-10-09 - Fuzzing internships for Open Source Software
2020-12-07 - Improving open source security during the Google summer internship program
2021-03-10 - Fuzzing Java in OSS-Fuzz
2021-12-16 - Improving OSS-Fuzz and Jazzer to catch Log4Shell
2022-09-08 - Fuzzing beyond memory corruption: Finding broader classes of vulnerabilities automatically
2023-02-01 - Taking the next step: OSS-Fuzz in 2023