ET WEB_SPECIFIC_APPS GL-iNet install_package Command Injection Attempt (CVE-2025-67091)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS GL-iNet install_package Command Injection Attempt (CVE-2025-67091)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:4;
    content:"/rpc";
    http.request_body;
    content:"|22|jsonrpc|22|";
    content:"|22|id|22 3a|";
    content:"1"; within:10;
    content:"|22|method|22 3a|";
    content:"|22|call|22|"; within:10;
    content:"|22|params|22|";
    content:"|22|plugins|22|";
    content:"|22|install_package|22|"; fast_pattern;
    content:"|22|name|22|";
    content:"|5b 22|"; within:10;
    pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
    reference:cve,2025-67091;
    reference:url,aleksazatezalo.medium.com/critical-command-injection-vulnerability-in-gl-inet-gl-axt1800-router-firmware-e6d67d81ee51?postPublishedType=repub;
    classtype:attempted-admin;
    sid:2066624; rev:1;
    metadata:affected_product GL_iNet, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_01_08, cve CVE_2025_67091, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)