clixon/fuzz/cli

Clixon fuzzing

This dir contains code for fuzzing clixon cli.

Note: cli plugins do not work.

Prereqs

See AFL docs for installing afl. On ubuntu this may be enough:

  sudo apt install afl

You may have to change cpu frequency:

  cd /sys/devices/system/cpu
  echo performance | tee cpu?/cpufreq/scaling_governor

And possibly change core behaviour:

  echo core >/proc/sys/kernel/core_pattern

Build

Build clixon statically with the afl-clang compiler:

  CC=/usr/bin/afl-clang-fast LINKAGE=static ./configure
  make clean
  cd apps/cli
  make clixon_cli
  sudo make install

Run tests

Start the backend and Use the script runfuzz.sh to run one test with a cli spec and an input string, eg:

  ./runfuzz.sh /usr/local/etc/hello.xml "set table parameter a value 23"

After (or during) the test, investigate results in the output dir.