alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Fortinet FortiWeb OS Command Injection Inbound M1 (CVE-2021-22123)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/remoteserver.saml"; fast_pattern; http.request_body; content:"form-data|3b 20|name=|22|name|22|"; nocase; content:"|60|"; distance:0; content:"--------"; distance:0; reference:cve,2021-22123; classtype:attempted-admin; sid:2033738; rev:1; metadata:attack_target Server, created_at 2021_08_18, cve CVE_2021_22123, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2021_08_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)