ET EXPLOIT Linksys WRT54G Version 3.1 Command Injection Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.header;
content:"Authorization|3a 20|Basic|20|";
http.uri;
content:"/apply.cgi"; startswith;
http.request_body;
content:"change_action=gozila_cgi"; fast_pattern;
content:"submit_type=language";
content:"&ui_language=";
pcre:"/^[(?:\x60|%60)(?:\x27|%27)]/R";
Raw source ET EXPLOIT Linksys WRT54G Version 3.1 Command Injection Attempt · 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 EXPLOIT Linksys WRT54G Version 3.1 Command Injection Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.header;
    content:"Authorization|3a 20|Basic|20|";
    http.uri;
    content:"/apply.cgi"; startswith;
    http.request_body;
    content:"change_action=gozila_cgi"; fast_pattern;
    content:"submit_type=language";
    content:"&ui_language=";
    pcre:"/^[(?:\x60|%60)(?:\x27|%27)]/R";
    reference:url,nstarke.github.io/0034-linksys-wrt54g-v3.1-writeup.html;
    classtype:attempted-admin;
    sid:2029734; rev:1;
    metadata:created_at 2020_03_24, confidence High, signature_severity Major, updated_at 2020_03_24, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;
)

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