alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN Tomcat admin-blank login credentials"; flow:established,to_server; flowbits:set,ET.Tomcat.login.attempt; http.uri; content:"/manager/html"; nocase; http.header; header_lowercase; content:"|0d 0a|authorization|3a 20|Basic YWRtaW46|0d 0a|"; fast_pattern; reference:url,tomcat.apache.org; classtype:attempted-admin; sid:2009218; rev:11; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2024_05_07;)