Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Microsoft Internet Explorer SameID Use-After-Free (CVE-2012-1875)"; flow:established,from_server; content:"<DIV id="; nocase; content:"<img id="; nocase; distance:0; content:".innerHTML"; distance:0; pcre:"/<DIV\s*?id[\s\r\n]*?\x3d[\s\r\n]*?(?P<divid>[^>]+).+?<img\s*id=\s*?\x22(?P<imgid>[^\x22]+).+?\<a\s*?href=\x22javascript\x3a(?P<firstfunction>[^\x28]+)\(\).+?\>.*?\<div[^\>]+?id=\x22(?P=imgid)\x22[^>]+?on[A-Za-z]+?\s*?=\s*?\x22(?P<secondfunction>[^\x28]+)\(\)\x3b\s*?\x22.+?function[\s\r\n]*?(?P=firstfunction)[\s\r\n]*?\(.*?\).*?\x7b.*?(?P=divid)\x2einnerHTML\s*?\x3d\s*?(?P=divid)\x2einnerHTML[\s\r\n]*?\x3b.*?\x7d.*?function[\s\r\n]*?(?P=secondfunction)[\s\r\n]*?\(.*?\).*?\x7b.*?\x28\x22(?P=imgid)\x22\x29\x2esrc\s*?\x3d/si"; reference:cve,CVE-2012-1875; classtype:attempted-user; sid:2014911; rev:11; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2012_06_12, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2022_06_10;)