ET EXPLOIT Possible Engineers Online Portal System Webshell Upload (CVE-2021-42669)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"teacher_avatar.php"; fast_pattern;
http.request_body;
content:"<?php";
Raw source ET EXPLOIT Possible Engineers Online Portal System Webshell Upload (CVE-2021-42669) · 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 Possible Engineers Online Portal System Webshell Upload (CVE-2021-42669)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"teacher_avatar.php"; fast_pattern;
    http.request_body;
    content:"<?php";
    reference:cve,2021-42669;
    classtype:attempted-admin;
    sid:2034453; rev:1;
    metadata:attack_target Server, created_at 2021_11_13, cve CVE_2021_42669, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2021_11_13, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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