alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER Joomla Upload File Filter Bypass"; flow:established,to_server; http.uri; content:"option=com_media"; nocase; fast_pattern; http.request_body; content:"Filedata[]"; nocase; pcre:"/filename[\r\n\s]*?=[\r\n\s]*?[\x22\x27]?[^\r\n\x22\x27\x3b]+?\.[\r\n\x3b\x22\x27]/i"; classtype:attempted-user; sid:2017327; rev:4; metadata:created_at 2013_08_14, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_19;)