ET WEB_SPECIFIC_APPS Totolink cstecgi.cgi setLanguageCfg lang Parameter Buffer Overflow Attempt

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Totolink cstecgi.cgi setLanguageCfg lang Parameter Buffer Overflow Attempt";
    flow:established,to_server;
    http.uri; bsize:12;
    content:"/cstecgi.cgi";
    http.request_body;
    content:"|22|setLanguageCfg|22|"; fast_pattern;
    content:"|22|lang|22 3a|";
    pcre:"/^[^,}$]{100,}(?:,|}|$)/";
    reference:url,github.com/luckysmallbird/Totolink-N350RT-Vulnerability/blob/main/3-lang.md;
    classtype:web-application-attack;
    sid:2063554; rev:1;
    metadata:affected_product TOTOLINK, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_07_17, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)