alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET EXPLOIT BlogEngine 3.3 - syndication.axd XXE Injection Attempt"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/syndication.axd?apml="; fast_pattern; pcre:"/^(?:https?:\/\/|(\d{1,3}\.){3}\d{1,3}|([a-z0-9-]+\.)+[a-z]{1,8})/Ri"; reference:url,www.exploit-db.com/exploits/48422; classtype:attempted-admin; sid:2030106; rev:1; metadata:affected_product Web_Server_Applications, attack_target Server, created_at 2020_05_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_05_05;)