ET WEB_SPECIFIC_APPS Totolink setWiFiAclRules desc Parameter Buffer Overflow Attempt (CVE-2025-5903)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Totolink setWiFiAclRules desc Parameter Buffer Overflow Attempt (CVE-2025-5903)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:20;
    content:"/cgi-bin/cstecgi.cgi";
    http.request_body;
    content:"topicurl|3d|setWiFiAclRules"; fast_pattern;
    content:"desc|3d|";
    pcre:"/^[^\x2c\x7d$]{100,}(?:\x2c|\x7d|$)/R";
    reference:url,candle-throne-f75.notion.site/TOTOLINK-T10-setWiFiAclRules-20bdf0aa118580399a8df6ba2a44c197;
    reference:cve,2025-5903;
    classtype:web-application-attack;
    sid:2062871; rev:2;
    metadata:affected_product TOTOLINK, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_06_10, cve CVE_2025_5903, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag AI_Generated_Description, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_01, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)