What is LibFuzzer?
LibFuzzer is an in-process engine that employs coverage-guided techniques for evolutionary fuzzing. By integrating directly with the library being tested, it injects generated fuzzed inputs into a specific entry point or target function, allowing it to track executed code paths while modifying the input data to improve code coverage. The coverage information is gathered through LLVM’s SanitizerCoverage instrumentation, which provides users with comprehensive insights into the testing process. Importantly, LibFuzzer is continuously maintained, with critical bugs being resolved as they are identified. To use LibFuzzer with a particular library, the first step is to develop a fuzz target; this function takes a byte array and interacts meaningfully with the API under scrutiny. Notably, this fuzz target functions independently of LibFuzzer, making it compatible with other fuzzing tools like AFL or Radamsa, which adds flexibility to testing approaches. Moreover, combining various fuzzing engines can yield more thorough testing results and deeper understanding of the library's security flaws, ultimately enhancing the overall quality of the code. The ongoing evolution of fuzzing techniques ensures that developers are better equipped to identify and address potential vulnerabilities effectively.
Pricing
Price Starts At:
Free
Free Version:
Free Version available.
Similar Software to LibFuzzer
Parasoft aims to deliver automated testing tools and knowledge that enable companies to accelerate the launch of secure and dependable software. Parasoft C/C++test serves as a comprehensive test automation platform for C and C++, offering capabilities for static analysis, unit testing, and structural code coverage, thereby assisting organizations in meeting stringent industry standards for functional safety and security in embedded software applications. This robust solution not only enhances code quality but also streamlines the development process, ensuring that software is both effective and compliant with necessary regulations.
Learn more
QA Wolf empowers engineering teams to achieve an impressive 80% automated test coverage for end-to-end processes within a mere four months.
Here’s what you can expect to receive, regardless of whether you need 100 tests or 100,000:
• Achieve automated end-to-end testing for 80% of user flows in just four months, with tests crafted using Playwright, an open-source tool ensuring you have full ownership of your code without vendor lock-in.
• A comprehensive test matrix and outline structured within the AAA framework.
• The capability to conduct unlimited parallel testing across any environment you prefer.
• Infrastructure for 100% parallel-run tests, which is hosted and maintained by us.
• Ongoing support for flaky and broken tests within a 24-hour window.
• Assurance of 100% reliable results with absolutely no flaky tests.
• Human-verified bug reports delivered through your preferred messaging app.
• Seamless CI/CD integration with your deployment pipelines and issue trackers.
• Round-the-clock access to dedicated QA Engineers at QA Wolf to assist with any inquiries or issues.
With this robust support system in place, teams can confidently scale their testing efforts while improving overall software quality.
Learn more
american fuzzy lop
American Fuzzy Lop, known as afl-fuzz, is a security-oriented fuzzer that employs a novel method of compile-time instrumentation combined with genetic algorithms to automatically create effective test cases, which can reveal hidden internal states within the binary under examination. This technique greatly improves the functional coverage of the fuzzed code. Moreover, the streamlined and synthesized test cases generated by this tool can prove invaluable for kickstarting other, more intensive testing methodologies later on. In contrast to numerous other instrumented fuzzers, afl-fuzz prioritizes practicality by maintaining minimal performance overhead while utilizing a wide range of effective fuzzing strategies that reduce the necessary effort. It is designed to require minimal setup and can seamlessly handle complex, real-world scenarios typical of image parsing or file compression libraries. As an instrumentation-driven genetic fuzzer, it excels at crafting intricate file semantics that are applicable to a broad spectrum of difficult targets, making it an adaptable option for security assessments. Additionally, its capability to adjust to various environments makes it an even more attractive choice for developers in pursuit of reliable solutions. This versatility ensures that afl-fuzz remains a valuable asset in the ongoing quest for software security.
Learn more
Honggfuzz
Honggfuzz is a sophisticated software fuzzer dedicated to improving security through its innovative fuzzing methodologies. Utilizing both evolutionary and feedback-driven approaches, it leverages software and hardware-based code coverage for optimal performance. The tool is adept at functioning within multi-process and multi-threaded frameworks, enabling users to fully utilize their CPU capabilities without the need for launching multiple instances of the fuzzer. Sharing and refining the file corpus across all fuzzing processes significantly boosts efficiency. When the persistent fuzzing mode is enabled, Honggfuzz showcases exceptional speed, capable of running a simple or empty LLVMFuzzerTestOneInput function at an astonishing rate of up to one million iterations per second on contemporary CPUs. It has a strong track record of uncovering security vulnerabilities, including the significant identification of the sole critical vulnerability in OpenSSL thus far. In contrast to other fuzzing solutions, Honggfuzz can recognize and report on hijacked or ignored signals resulting from crashes, enhancing its utility in pinpointing obscure issues within fuzzed applications. With its comprehensive features and capabilities, Honggfuzz stands as an invaluable resource for security researchers striving to reveal hidden weaknesses in software architectures. This makes it not only a powerful tool for testing but also a crucial component in the ongoing battle against software vulnerabilities.
Learn more
Screenshots and Video
Company Facts
Company Name:
LLVM Project
Date Founded:
2003
Company Website:
llvm.org/docs/LibFuzzer.html
Product Details
Deployment
Windows
Linux
Training Options
Documentation Hub
Support
Web-Based Support
Product Details
Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English
