ET WEB_SPECIFIC_APPS Evertz SDVN Authentication Bypass + Command Injection Attempt M1 (CVE-2025-4009)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Evertz SDVN Authentication Bypass + Command Injection Attempt M1 (CVE-2025-4009)";
    flow:established,to_server;
    xbits:set,ET.CVE-2025-4009.attempt, track ip_dst, expire 300;
    http.method;
    content:"GET";
    http.uri;
    content:"/login.php|3f|authorized|3d|"; startswith;
    content:"eyJuYW1lIjogImFkbWlu"; within:100; fast_pattern;
    reference:cve,2025-4009;
    reference:url,www.onekey.com/resource/security-advisory-remote-code-execution-on-evertz-svdn-cve-2025-4009;
    classtype:attempted-admin;
    sid:2063273; rev:1;
    metadata:affected_product Evertz, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_07_02, cve CVE_2025_4009, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_02, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)