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OSS-Fuzz - continuous fuzzing for open source software.
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Victor Costan 6af0e55ecd
leveldb: Fuzzer improvements. (#4837) 
* Stop when opening a database fails. This will avoid null pointer
  dereferences.

* Use C++11 smart pointers for leveldb::DB and leveldb::Iterator. This
  makes it easier to ensure the fuzzer doesn't leak memory. No leak was
  detected while applying this fix.

* Use the FuzzedDataProvider API exclusively for consuming data. This
  makes it easier to ensure maximum fuzzer coverage.

* Avoid building unnecessary code (tests, benchmarks). This slightly
  reduces oss-fuzz resource usage.

* Use an enum class and FuzzedDataProvider::ConsumeEnum() instead of
  reimplementing it. This makes it easier to extend the fuzzer with new
  operations in the future.

* Use meaningful names (key, value, name) instead of tmp* for local
  variables storing leveldb API inputs.
 		2020-12-14 14:46:37 +11:00
.github/workflows Revert msan patch (#4788) 2020-12-04 19:44:46 -08:00
docs Fix symbolization for python targets. (#4836) 2020-12-13 15:07:28 -08:00
infra Copy llvm-symbolizer in $OUT, needed for python targets. (#4832) 2020-12-12 18:58:59 -08:00
projects leveldb: Fuzzer improvements. (#4837) 2020-12-14 14:46:37 +11:00
.dockerignore Reland 55d9a81. (#4269) 2020-08-06 14:33:08 -07:00
.gitignore Delete unnecessary files and fix format in some MD pages (#4115) 2020-07-16 15:27:29 -07:00
.pylintrc Revert msan patch (#4788) 2020-12-04 19:44:46 -08:00
.style.yapf [infra] Add presubmit script (#3196) 2020-01-10 10:19:42 -08:00
CONTRIBUTING.md Delete unnecessary files and fix format in some MD pages (#4115) 2020-07-16 15:27:29 -07:00
LICENSE Create LICENSE 2016-10-03 12:24:25 -07:00
README.md Update links and blog posts. (#4833) 2020-12-13 09:10:51 -08:00
oss-fuzz.iml Add jekyll generator for docs. (#2660) 2019-08-06 13:29:19 -07:00

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.

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, and Go code. Other languages supported by LLVM may work too. OSS-Fuzz supports fuzzing x86_64 and i386 builds.

Overview

OSS-Fuzz process diagram

Documentation

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

Trophies

As of June 2020, OSS-Fuzz has found over 20,000 bugs in 300 open source projects.

Blog posts