alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT PAN-OS OS Command Injecton Attempt Inbound (CVE-2020-2038)"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"?cmd=<cms-ping>"; content:"|3c 21 5b|CDATA|5b 7c 7c|"; fast_pattern; reference:cve,2020-2038; classtype:attempted-admin; sid:2038688; rev:1; metadata:attack_target Server, created_at 2022_08_31, cve CVE_2020_2038, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2022_08_31, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)