ET WEB_SPECIFIC_APPS Linksys upload_settings filename Parameter Command Injection Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:28;
content:"/cgi-bin/upload_settings.cgi"; fast_pattern;
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|filename|22 3b 20|filename|3d 22|";
pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Linksys upload_settings filename Parameter 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 WEB_SPECIFIC_APPS Linksys upload_settings filename Parameter Command Injection Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:28;
    content:"/cgi-bin/upload_settings.cgi"; fast_pattern;
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|filename|22 3b 20|filename|3d 22|";
    pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
    reference:cve,2025-5447;
    reference:url,github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_12/12.md;
    classtype:attempted-admin;
    sid:2062766; rev:1;
    metadata:affected_product Linksys, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_06_04, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_06_04, 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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