Uncaught exception while accessing JSON data when input is doesnt contain expected field

[SohamG]

While fuzz testing EVerest, I found that the following .at() function call throws an exception but the exception is never caught. This causes a crash when the json message received is well-formed JSON but does not contain the expected field that is being accessed (ie is malformed OCPP).

Affiliation: Discovery Partners Institute, University of Illinois Chicago, Prof Rigel Gjomemo

libocpp/include/ocpp/common/call_types.hpp

Line 130 in 6f6b26a

c.msg = j.at(CALLRESULT_PAYLOAD);

[Pietfried]

Hi @SohamG , thanks raising this issue! Are you able share the respective message sequence and which OCPP version was used?