ET WEB_SPECIFIC_APPS D-Link gena.cgi service Parameter Command Injection Attempt (CVE-2024-23625)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS D-Link gena.cgi service Parameter Command Injection Attempt (CVE-2024-23625)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/gena.cgi|3f|"; startswith; fast_pattern;
    content:"service|3d|"; distance:0;
    pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
    reference:url,www.fortinet.com/blog/threat-research/clingstun-linux-backdoor-abuses-public-stun-infrastructure;
    reference:cve,2024-23625;
    classtype:attempted-admin;
    sid:2072375; rev:1;
    metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_10_06, cve CVE_2024_23625, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_10_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)