ClusterFuzz

ClusterFuzz is a scalable fuzzinginfrastructure that finds security and stability issues in software.

Google uses ClusterFuzz to fuzz all Google products and as the fuzzingbackend for OSS-Fuzz.

ClusterFuzz provides many features which help seamlessly integrate fuzzing intoa software project's development process:

• Highly scalable. Can run on any size cluster (e.g. OSS-Fuzz instance runs on100,000 VMs).
• Accurate deduplication of crashes.
• Fully automatic bug filing, triage and closing for various issue trackers(e.g. Monorail, Jira).
• Supports multiple coverage guided fuzzing engines(libFuzzer, AFL, AFL++ and Honggfuzz)for optimal results (with ensemble fuzzing and fuzzing strategies).
• Support for blackbox fuzzing.
• Testcase minimization.
• Regression finding through bisection.
• Statistics for analyzing fuzzer performance, and crash rates.
• Easy to use web interface for management and viewing crashes.
• Support for various authentication providers using Firebase.

Overview

Documentation

You can find detailed documentation here.

Trophies

As of February 2021, ClusterFuzz has found ~29,000 bugs in Google (e.g. Chrome)and 26,000+ bugs in over 400 open source projects integrated with OSS-Fuzz.

Getting Help

You can file an issue to askquestions, request features, or ask for help.

Staying Up to Date

We will use clusterfuzz-announce(#)googlegroups.com to make announcements about ClusterFuzz.

ClusterFuzzLite

For a more lightweight version of ClusterFuzz that runs on CI/CDsystems, check out ClusterFuzzLite.