alert http any any -> $HTTP_SERVERS any (
msg:"ET WEB_SPECIFIC_APPS [PT OPEN] Drupalgeddon2 <8.3.9 <8.4.6 <8.5.1 RCE Through Registration Form (CVE-2018-7600)";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/user/register";
http.request_body;
content:"drupal";
pcre:"/(%23|#)(access_callback|pre_render|post_render|lazy_builder)/i";
reference:cve,2018-7600;
reference:url,research.checkpoint.com/uncovering-drupalgeddon-2;
classtype:attempted-admin;
sid:2025494; rev:3;
metadata:affected_product Drupal_Server, attack_target Web_Server, created_at 2018_04_13, deployment Datacenter, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25;
)