alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Nagios XI Adding Administrative User"; flow:established,to_server; http.uri; content:"/api/v1/system/user"; http.request_body; content:"username="; content:"&password="; content:"&name="; content:"&email="; content:"&auth_level=admin&force_pw_change=0"; fast_pattern; reference:url,2018-8733; reference:cve,2018-8734; reference:cve,2018-8735; reference:cve,2018-8736; reference:url,exploit-db.com/exploits/44969/; classtype:attempted-user; sid:2025778; rev:2; metadata:attack_target Server, created_at 2018_07_03, cve CVE_2018_8734, deployment Datacenter, confidence High, signature_severity Critical, updated_at 2020_08_25;)