Versions (4)
Version DetailsCurrent
Rev: 4 • Jul 11, 2013, 12:00 PMET WEB_CLIENT Potential Internet Explorer Use After Free CVE-2013-3163 2
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Potential Internet Explorer Use After Free CVE-2013-3163 2"; flow:established,from_server; file_data; content:"CollectGarbage("; fast_pattern; nocase; content:".contentEditable"; nocase; pcre:"/^[\r\n\s\+]*?=[\r\n\s\+]*?true/Ri"; content:"var"; pcre:"/^[\r\n\s\+]+?(?P<var>[^\r\n\s\+\x3d]+)[\r\n\s\+]*?=[\r\n\s\+]*?[^\)]+\.createElement\(.+?\.appendChild\([\r\n\s]*?[\x22\x27]?(?P=var)[\x22\x27]?[\r\n\s]*?\).+\b(?P=var)\.innerHTML[\r\n\s\+]*?=[\r\n\s\+]*?(?P<q>[\x22\x27])(?P=q).+?CollectGarbage\(.+?\b(?P=var)\./Rsi"; reference:cve,2013-3163; reference:url,blogs.technet.com/b/srd/archive/2013/07/10/running-in-the-wild-not-for-so-long.aspx; classtype:attempted-user; sid:2017130; rev:4; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_and_Server, created_at 2013_07_11, deployment Perimeter, deployment Internal, confidence Low, signature_severity Major, tag Web_Client_Attacks, tag CISA_KEV, updated_at 2022_07_01, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise; target:dest_ip;)
Jul 11, 2013, 12:00 PM
Jul 1, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-web_client.rules