libFuzzer C/C++ Security Testing FAQs

Question 1

Can libFuzzer be integrated into CI/CD pipelines?

Accepted Answer

Yes, libFuzzer is highly compatible with CI/CD environments. Because it is part of the LLVM project, it can be compiled and run as part of automated testing suites to catch regressions and new vulnerabilities early.

Question 2

What is the role of a fuzzing harness?

Accepted Answer

A fuzzing harness is a specialized entry point (usually LLVMFuzzerTestOneInput) that bridges the fuzzer's generated data to the target function you are testing, ensuring the fuzzed input is processed correctly.

Question 3

Why choose libFuzzer over AFL++ for my project?

Accepted Answer

libFuzzer is generally easier to set up for C/C++ projects because it is built directly into the LLVM/Clang toolchain. It is the recommended starting point for single-project fuzzing due to its simplicity and high performance.

Question 4

Does libFuzzer require specific operating systems?

Accepted Answer

While libFuzzer has the best support and feature set on Linux, it is also supported on macOS and Windows (via Clang in Visual Studio), making it a versatile tool for cross-platform development.

Question 5

How do I handle complex inputs like structured JSON or network packets?

Accepted Answer

You can use the FuzzedDataProvider helper included with LLVM to easily split the raw fuzzer input into structured types, integers, and strings for more effective testing of complex data structures.

libFuzzer C/C++ Security Testing

libFuzzer C/C++ Security Testing

概要

主な機能

ユースケース

概要

主な機能

ユースケース