alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Possible Zimbra Autodiscover Servlet XXE (CVE-2019-9670)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/Autodiscover/Autodiscover.xml"; http.request_body; content:"<!ENTITY|20|"; content:"|20|SYSTEM|20 22|"; fast_pattern; pcre:"/^\s?(?:file|https?)\x3a/Ri"; reference:cve,2019-9670; classtype:attempted-admin; sid:2037040; rev:1; metadata:attack_target Server, created_at 2022_06_20, cve CVE_2019_9670, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2022_06_20, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)