alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT Possible Ticketbleed Server Hello (CVE-2016-9244)"; flow:established,to_client; content:"|16 03|"; depth:2; content:"|02|"; distance:3; within:1; content:"|03 03|"; distance:3; within:2; content:"|20|"; distance:32; within:1; flowbits:isset,ET.ticketbleed; reference:url,filippo.io/Ticketbleed; reference:cve,2016-9244; classtype:misc-attack; sid:2023897; rev:3; metadata:affected_product HTTP_Server, attack_target Server, created_at 2017_02_10, deployment Datacenter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2019_07_26;)