ruzzy

Memory safety issues in Ruby native extensions can be detected using coverage-guided fuzzing to automatically identify crashes and memory corruption vulnerabilities. Ruzzy integrates sanitizer tools to thoroughly test Ruby gems and C extensions for robustness.

Coverage-guided fuzzing for Ruby applications is a testing technique that automatically detects memory errors in both pure Ruby code and native extensions. It works by generating inputs based on code coverage to uncover security flaws and stability bugs.

Fuzzing works on both pure Ruby code and native C extensions. Ruzzy applies coverage-guided techniques to uncover memory corruption vulnerabilities across Ruby gems and their critical native components.

To fuzz a Ruby C extension, set the required environment variables, run the fuzzer with an appropriate custom harness script, and analyze the resulting crashes for potential memory vulnerabilities. Address and undefined behavior sanitizers are supported for thorough testing.

Custom fuzzing harnesses are required for effective fuzzing of Ruby gems. Ruzzy requires these harnesses alongside sanitizer tools to accurately target and detect memory errors within Ruby applications and native extensions.

Fuzzing for Ruby memory safety testing is suitable when improving the robustness of Ruby gems with critical native components. It efficiently uncovers security flaws and stability bugs in extensions like msgpack using sanitizer integration.