ET EXPLOIT Possible Moxa MxView RCE Attempt (CVE-2021-38454)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"api/sites/site/"; fast_pattern;
pcre:"/^[a-zA-Z0-9]{5,45}/R";
content:"/ping"; endswith;
Raw source ET EXPLOIT Possible Moxa MxView RCE Attempt (CVE-2021-38454) · 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 Moxa MxView RCE Attempt (CVE-2021-38454)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"api/sites/site/"; fast_pattern;
    pcre:"/^[a-zA-Z0-9]{5,45}/R";
    content:"/ping"; endswith;
    reference:cve,2021-38454;
    classtype:attempted-admin;
    sid:2035194; rev:2;
    metadata:attack_target Server, created_at 2022_02_14, cve CVE_2021_38454, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2022_02_14, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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