Heads up. Sofia SIP can possibly bring down your PBXs with an easily craftable OPTIONS message. 
	
	
		
			
				
					
						
					
				
			
			
				
					
						
							
						
					
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			Remote attackers can cause a denial of service with a crafted UDP message
Remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that leads to a failure of the libsofia-sip-ua/tport/tport.c self assertion.  Update to sofia-sip >= 1.13.14...