alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Inbound VMware vCenter RCE Attempt with Untrusted SSH Key Upload (CVE-2021-21972)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/ui/vropspluginui/rest/services/uploadova"; endswith; fast_pattern; http.request_body; content:".tar|22|"; content:"|0d 0a|."; distance:0; content:"|2f|.ssh|2f|authorized_keys"; distance:0; within:100; reference:url,swarm.ptsecurity.com/unauth-rce-vmware/; reference:cve,2021-21972; classtype:attempted-admin; sid:2031669; rev:2; metadata:affected_product VMware, attack_target Server, created_at 2021_02_25, cve CVE_2021_21972, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_25;)