ET EXPLOIT LB-Link Command Injection Attempt (CVE-2023-26801)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:27;
content:"/goform/set_LimitClient_cfg";
http.request_body;
content:"time1="; startswith; fast_pattern;
content:"&time2"; distance:0;
content:"&mac="; distance:0;
pcre:"/^[^&]*?(?:(wget|curl))/R";
target:dest_ip;
Raw source ET EXPLOIT LB-Link Command Injection Attempt (CVE-2023-26801) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT LB-Link Command Injection Attempt (CVE-2023-26801)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:27;
    content:"/goform/set_LimitClient_cfg";
    http.request_body;
    content:"time1="; startswith; fast_pattern;
    content:"&time2"; distance:0;
    content:"&mac="; distance:0;
    pcre:"/^[^&]*?(?:(wget|curl))/R";
    reference:url,unit42.paloaltonetworks.com/mirai-variant-iz1h9;
    reference:cve,2023-26801;
    classtype:attempted-admin;
    sid:2048548; rev:2;
    metadata:attack_target IoT, created_at 2023_10_12, cve CVE_2023_26801, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_17, reviewed_at 2023_10_12, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
    target:dest_ip;
)

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