alert tcp any any -> $HOME_NET 8009 (
msg:"ET EXPLOIT [401TRG] GhostCat LFI Attempt Inbound (CVE-2020-1938)";
flow:established,to_server;
content:"|12 34|"; depth:2;
content:"|00 08|HTTP/1.1|00|"; distance:0;
content:"javax.servlet.include.path_info|00|"; nocase; distance:0;
content:"javax.servlet.include.request_uri|00|";
content:"javax.servlet.include.servlet_path|00|";
flowbits:set,ET.GhostCat;
reference:cve,2020-1938;
reference:url,www.tenable.com/blog/cve-2020-1938-ghostcat-apache-tomcat-ajp-file-readinclusion-vulnerability-cnvd-2020-10487;
classtype:attempted-admin;
sid:2029533; rev:3;
metadata:affected_product Apache_Tomcat, attack_target Web_Server, created_at 2020_02_25, cve CVE_2020_1938, deployment Perimeter, confidence Medium, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_08;
)