ET WEB_SPECIFIC_APPS Tenda dhcpsCfgSet altDNS parameter Buffer Overflow Attempt (CVE-2025-4007)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:15;
content:"/goform/modules";
http.request_body;
content:"dhcpsCfgSet"; fast_pattern;
content:"altDns";
pcre:"/^\x22\x3a[^\x7c\x2c$]{100,}(?:\x2c|\x7d|$)/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Tenda dhcpsCfgSet altDNS parameter Buffer Overflow Attempt (CVE-2025-4007) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Tenda dhcpsCfgSet altDNS parameter Buffer Overflow Attempt (CVE-2025-4007)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:15;
    content:"/goform/modules";
    http.request_body;
    content:"dhcpsCfgSet"; fast_pattern;
    content:"altDns";
    pcre:"/^\x22\x3a[^\x7c\x2c$]{100,}(?:\x2c|\x7d|$)/R";
    reference:cve,2025-4007;
    reference:url,github.com/02Tn/vul/issues;
    classtype:web-application-attack;
    sid:2062204; rev:1;
    metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_05_08, cve CVE_2025_4007, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_05_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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