Atheris is a coverage-guided Python fuzzing engine. It supports fuzzing of Python code, but also native extensions written for CPython. Atheris is based off of libFuzzer. When fuzzing native code, Atheris can be used in combination with Address Sanitizer or Undefined Behavior Sanitizer to catch extra bugs.

Dec 4, 2020 · Atheris is a coverage-guided Python fuzzing engine. It supports fuzzing of Python code, but also native extensions written for CPython. Atheris is based off of libFuzzer. When fuzzing native code, Atheris can be used in combination with Address Sanitizer or Undefined Behavior Sanitizer to catch extra bugs.

Sep 30, 2024 · Atheris is a fuzzer built by Google to make fuzzing on Python as simple as possible. It’s pip-installable, provides flexible input generation, and doesn’t require much code to start using, as we’ll see. If you’re not familiar with fuzz testing (aka “fuzzing”), it’s basically randomized negative testing.

Dec 4, 2020 · Atheris can be used to automatically find bugs in Python code and native extensions. Atheris is a “ coverage-guided ” fuzzer, which means that Atheris will repeatedly try various inputs to your program while watching how it executes, and try to find interesting paths.

Dec 9, 2020 · Posted by Google Information Security On Friday, we announced that we’ve released the Atheris Python fuzzing engine as open source. In th...

Feb 2, 2021 · Atheris is one of the first coverage-guided Python fuzzers. It means, the fuzzer measures the code coverage and observers the target program during execution and notes down inputs which result in unique execution behaviour.

"""An example of fuzzing in Python.""" import atheris import sys # This tells Atheris to instrument all functions in the `struct` and # `example_library` modules. with atheris.instrument_imports (): import struct import example_library @atheris.instrument_func # Instrument the TestOneInput function itself def TestOneInput (data): """The entry ...

Atheris is a coverage-guided Python fuzzing engine. It supports fuzzing of Python code, but also native extensions written for CPython. Atheris is based off of libFuzzer. When fuzzing native code, Atheris can be used in combination with Address Sanitizer or Undefined Behavior Sanitizer to catch extra bugs.

This example highlights Atheris’ ability to instrument and track coverage in pure Python code. More typically you will want to use something like atheris.instrument_imports or atheris.instrument_all to fuzz broader parts of an application or library.

Dec 7, 2020 · As interest in fuzzing as a software testing approach increases, Google decided to ride that wave and has open-sourced its Python fuzzing engine Atheris.