alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Nagios XI <= 5.6.5 Privesc (CVE-2019-15949)"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"name="; pcre:"/^[\s\x22\x27]*upload\b/Ri"; content:"name="; distance:0; pcre:"/^[\s\x22\x27]*uploadedfile\b/Ri"; content:"filename="; distance:0; pcre:"/^[\s\x22\x27]*check_ping\b/Ri"; content:"check_ping"; nocase; fast_pattern; reference:url,github.com/jakgibb/nagiosxi-root-rce-exploit/blob/master/exploit.php; reference:cve,2019-15949; classtype:attempted-admin; sid:2034535; rev:1; metadata:attack_target Server, created_at 2021_11_23, cve CVE_2019_15949, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_11_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)