ClusterFuzz

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

Google uses ClusterFuzz to fuzz the Chrome Browser and as the fuzzing backend for OSS-Fuzz.

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

• Highly scalable. Google's internal instance runs on over 25,000 machines.
• Accurate deduplication of crashes.
• Fully automatic bug filing and closing for issue trackers (Monorail only for now).
• Testcase minimization.
• Regression finding through bisection.
• Statistics for analyzing fuzzer performance, and crash rates.
• Easy to use web interface for management and viewing crashes.
• Firebase authentication.
• Support for coverage guided fuzzing (e.g. libFuzzer and AFL) and blackbox fuzzing.

Overview

Documentation

You can find detailed documentation here.

Trophies

As of January 2019, ClusterFuzz has found ~16,000 bugs in Chrome and ~11,000 bugs in over 160 open source projects integrated with OSS-Fuzz.

Getting Help

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

Staying Up to Date

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