ET WEB_SPECIFIC_APPS Alcatel-Lucent Authentication Bypass Attempt (CVE-2025-52689)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Alcatel-Lucent Authentication Bypass Attempt (CVE-2025-52689)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:20;
    content:"/echo.fcgi/api/login"; fast_pattern;
    http.header;
    content:"X-API-App-Id|3a 20|hyapiinterface";
    content:"X-API-Timestamp|3a 20|";
    pcre:"/^\d{10}/R";
    content:"X-API-Signature|3a 20|";
    pcre:"/^[A-F0-9]{32}/R";
    reference:url,github.com/UltimateHG/CVE-2025-52689-PoC;
    reference:cve,2025-52689;
    classtype:web-application-attack;
    sid:2063533; rev:1;
    metadata:affected_product Alcatel_Lucent, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_07_16, cve CVE_2025_52689, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_16, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)