alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Cisco HyperFlex HX Data Platform Pre-Auth RCE Inbound (CVE-2021-1499)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/upload"; http.request_body; content:"name=|22|"; content:"filename=|22|../../"; fast_pattern; reference:cve,2021-1499; classtype:attempted-admin; sid:2033907; rev:1; metadata:attack_target Server, created_at 2021_09_07, cve CVE_2021_1499, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2021_09_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)