ET EXPLOIT Fortinet FortiWeb OS Command Injection Inbound M2 (CVE-2021-22123)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/remoteserver.saml"; fast_pattern;
http.request_body;
content:"form-data|3b 20|name=|22|name|22|"; nocase;
content:"|24|"; distance:0;
content:"--------"; distance:0;
Raw source ET EXPLOIT Fortinet FortiWeb OS Command Injection Inbound M2 (CVE-2021-22123) · Suricata
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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 Fortinet FortiWeb OS Command Injection Inbound M2 (CVE-2021-22123)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/remoteserver.saml"; fast_pattern;
    http.request_body;
    content:"form-data|3b 20|name=|22|name|22|"; nocase;
    content:"|24|"; distance:0;
    content:"--------"; distance:0;
    reference:cve,2021-22123;
    classtype:bad-unknown;
    sid:2033742; rev:1;
    metadata:attack_target Server, created_at 2021_08_18, cve CVE_2021_22123, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2021_08_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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