13.6 Setting SDP from remote endpoints
setRemoteDescription
guards against malformed and invalid SDP by throwing exceptions, but makes no attempt to guard against SDP that might be unexpected by the application. Setting the remote description can cause significant resources to be allocated (including image buffers and network ports), media to start flowing (which may have privacy and bandwidth implications) among other things. An application that does not guard against malicious SDP could be at risk of resource deprivation, unintentionally allowing incoming media or at risk of not having certain events fire like ontrack
if the other endpoint does not negotiate sending. Applications need to be on guard against malevolent SDP.