ET WEB_SPECIFIC_APPS Wing FTP Server NULL-byte Authentication Bypass (CVE-2025-47812)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Wing FTP Server NULL-byte Authentication Bypass (CVE-2025-47812)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/loginok.html"; fast_pattern;
    http.referer;
    content:"|2f|login.html";
    http.request_body;
    content:"username|3d|";
    pcre:"/^[^\x26]*?(?:\x00|\x2500)/R";
    reference:url,www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/;
    reference:cve,2025-47812;
    classtype:web-application-attack;
    sid:2063316; rev:1;
    metadata:attack_target Server, created_at 2025_07_07, cve CVE_2025_47812, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2025_07_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)