1359755 - IPDL protocol fuzzing

Status: NEW

(Core :: Fuzzing, enhancement)

Description

[Henry Chang [:hchang]]

Unlike what we already for low level IPC fuzzing, we would like to do fuzzing more IPDL-aware. In other words, we'd like to find vulnerable in the "handler" layer. (The handler is typically like PFooProtocolChild::RecvBarMessage() for PFooProtocol.barMessage)

Comment 1

[Henry Chang [:hchang]]

https://github.com/elefant/gecko-dev/tree/ipdl-fuzzing/toolkit/ipdl_fuzzing

I have been prototyping the ipdl fuzzer in the above branch since the end
of this March. This current baby fuzzer consists of 

1) A hook (window.alert) to trigger fuzzing (only for testing for sure lol)

https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/dom/base/nsGlobalWindow.cpp#L7414

2) 3 fuzzers (for PHttpChannel/PCameras/PBrowser) are in place. 
   Most of their to-parent messages are covered.

https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/HttpChannelFuzzer.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/HttpChannelFuzzer.cpp
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/CamerasFuzzer.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/CamerasFuzzer.cpp
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/PBrowserFuzzer.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/PBrowserFuzzer.cpp


3) Tons of FuzzTraits for those types which are required for those 3 fuzzers.
   Note that those FuzzTraits are only capable of generating random data.
   They are supposed to be able to mutate the given objects.

https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/FuzzTraitsPrimitives.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/FuzzTraitsCommon.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/FuzzTraitsNeckoChannelParams.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/FuzzTraitsPCameras.h
https://github.com/elefant/gecko-dev/blob/ipdl-fuzzing/toolkit/ipdl_fuzzing/FuzzTraitsPBrowser.h

I don't know the how far this project could go but I would expect at least

1) A client (in whatever form) to trigger/manipulate the fuzzing.
2) More fuzzers (either by hand-wring or codegen)
3) More FuzzTraits
4) Record the fuzzing trace for replay/reproduce purpose.