ET WEB_SPECIFIC_APPS Tenda setcfm Multiple Parameters Buffer Overflow Attempt (CVE-2025-4298, CVE-2025-57528)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Tenda setcfm Multiple Parameters Buffer Overflow Attempt (CVE-2025-4298, CVE-2025-57528)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:14;
    content:"/goform/setcfm"; fast_pattern;
    http.request_body;
    pcre:"/funcpara[12]\x3d[^&]{100,}(?:&|$)/";
    reference:url,github.com/SolitaryGrass/IoT_vuln/blob/main/tenda/AC6/AC6V2.0RTL_V15.03.06.23/formSetCfm/poc.md;
    reference:cve,2025-4298;
    reference:cve,2025-57528;
    reference:url,github.com/faqiadegege/IoTVuln/blob/main/tendaAc6_formSetCfm_funcname_overflow/detail.md;
    classtype:web-application-attack;
    sid:2064108; rev:2;
    metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_08_22, cve CVE_2025_4298, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)