Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Microsoft Internet Explorer CSS Cross-Origin Theft Attempt"; flow:established,to_client; content:"document.body.currentStyle.fontFamily"; nocase; content:".indexOf(|22|authenticity_token"; nocase; distance:0; reference:url,www.theregister.co.uk/2010/09/06/mystery_ie_bug/; reference:url,www.darknet.org.uk/2010/09/microsoft-investigate-ie-css-cross-origin-theft-vulnerability/; reference:url,seclists.org/fulldisclosure/2010/Sep/64; classtype:bad-unknown; sid:2011472; rev:3; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_09_29, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_09_27;)