alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Firefox Proxy Prototype RCE Attempt (CVE-2014-8636)"; flow:from_server,established; file_data; content:"chrome|3a 2f 2f|"; nocase; content:"open"; nocase; pcre:"/^\s*?\(\s*?[\x22\x27]chrome\x3a\/\//Ri"; content:"messageManager.loadFrameScript"; nocase; content:"Proxy.create"; nocase; reference:url,community.rapid7.com/community/metasploit/blog/2015/03/23/r7-2015-04-disclosure-mozilla-firefox-proxy-prototype-rce-cve-2014-8636; reference:cve,2014-8636; classtype:attempted-user; sid:2020756; rev:2; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2015_03_26, cve CVE_2014_8636, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)