alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Microsoft Office Visio DXF File Processing Remote Code Execution"; flow:established,to_client; flowbits:isset,DXF.Ext.Access; content:"|0A 45 4E 44 53 45 43|"; content:!"|0a|"; within:2; byte_test:1,>,81,2,relative; reference:url,www.exploit-db.com/moaub-8-microsoft-office-visio-dxf-file-stack-overflow; reference:url,www.exploit-db.com/exploits/14944/; reference:cve,2010-1681; reference:url,www.microsoft.com/technet/security/bulletin/ms10-028.mspx; reference:bid,39836; classtype:attempted-user; sid:2012153; rev:3; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2011_01_06, cve CVE_2010_1681, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)