alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Microsoft Office RTF Stack Buffer Overflow"; flow:from_server,established; file_data; content:"|7b 5c|rt"; within:4; flowbits:set,ETPRO.RTF; flowbits:noalert; reference:cve,2010-3333; classtype:misc-activity; sid:2020699; rev:5; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2015_03_16, cve CVE_2010_3333, deployment Perimeter, confidence High, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)