freerdp: out of bounds read in drdynvc_process_capability_request

FreeRDP FreeRDP 2.0.0-rc3 released version before commit 205c612820dac644d665b5bb1cdf437dc5ca01e3 contains a Other/Unknown vulnerability in channels/drdynvc/client/drdynvcmain.c, drdynvcprocesscapabilityrequest that can result in The RDP server can read the client's memory.. This attack appear to...