Denial Of Service (DoS)

asterisk, edge is vulnerable to denial of service. It allows an attacker to trigger a crash by sending a declined stream in a response re-invite initiated by Asterisk...

asterisk -- Remote crash possible when negotiating T.38

The Asterisk project reports: When re-negotiating for T.38 if the initial remote response was delayed just enough Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream then Asterisk would crash...

asterisk -- Crash when negotiating for T.38 with a declined stream

The Asterisk project reports: When Asterisk sends a re-invite initiating T.38 faxing, and the endpoint responds with a declined media stream a crash will then occur in Asterisk...