ET WEB_SPECIFIC_APPS CouchCMS gen_dump.php Arbitrary File Read Attempt (CVE-2025-67004)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS CouchCMS gen_dump.php Arbitrary File Read Attempt (CVE-2025-67004)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/CouchCMS/couch/gen_dump.php/"; startswith; fast_pattern;
    pcre:"/^[^\x26]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R";
    reference:url,gist.github.com/thepiyushkumarshukla/d01f8004c43692f18c75548f4739955a;
    reference:cve,2025-67004;
    classtype:attempted-admin;
    sid:2066656; rev:1;
    metadata:affected_product CouchCMS, attack_target Web_Server, tls_state plaintext, created_at 2026_01_09, cve CVE_2025_67004, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_01_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)