alert udp $EXTERNAL_NET any -> $HOME_NET 5060 (msg:"GPL VOIP EXPLOIT SIP UDP Softphone overflow attempt"; content:"|3B|branch|3D|"; content:"a|3D|"; pcre:"/^a\x3D[^\n]{1000,}/smi"; reference:bugtraq,16213; reference:cve,2006-0189; classtype:misc-attack; sid:2100223; rev:2; metadata:created_at 2010_09_23, cve CVE_2006_0189, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)