alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (
msg:"ET WEB_SPECIFIC_APPS Atlassian Confluence CVE-2023-22518 Vulnerable Server Detected M1 Version 1.x-6.x";
flow:established,to_client;
http.response_body;
content:"|3c|meta|20|name|3d 22|ajs|2d|version|2d|number|22 20|content|3d 22|"; fast_pattern;
pcre:"/^[1-6]\./R";
threshold:type limit, count 1, seconds 3600, track by_src;
reference:url,confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html;
reference:cve,2023-22518;
classtype:web-application-activity;
sid:2049080; rev:1;
metadata:affected_product Atlassian_Confluence, attack_target Web_Server, created_at 2023_11_06, cve CVE_2023_22518, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_06;
target:src_ip;
)