ET EXPLOIT Trenda Router AC11 RCE Inbound (CVE-2021-31755)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/goform/setmac"; fast_pattern;
http.request_body;
content:"&mac=";
target:dest_ip;
Raw source ET EXPLOIT Trenda Router AC11 RCE Inbound (CVE-2021-31755) · 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 -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Trenda Router AC11 RCE Inbound (CVE-2021-31755)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/goform/setmac"; fast_pattern;
    http.request_body;
    content:"&mac=";
    reference:url,www.fortinet.com/blog/threat-research/the-ghosts-of-mirai;
    reference:url,github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-31755.yaml;
    reference:cve,2021-31755;
    classtype:attempted-admin;
    sid:2033284; rev:4;
    metadata:attack_target Networking_Equipment, tls_state plaintext, created_at 2021_07_08, cve CVE_2021_31755, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2024_10_21, 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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