ET EXPLOIT Possible Citrix ShareFile RCE Inbound (CVE-2021-22941)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"upload.aspx";
content:"id=../"; fast_pattern;
content:"bp=";
content:"accountid=";
Raw source ET EXPLOIT Possible Citrix ShareFile RCE Inbound (CVE-2021-22941) · 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 Citrix ShareFile RCE Inbound (CVE-2021-22941)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"upload.aspx";
    content:"id=../"; fast_pattern;
    content:"bp=";
    content:"accountid=";
    reference:url,codewhitesec.blogspot.com/2021/09/citrix-sharefile-rce-cve-2021-22941.html;
    reference:cve,2021-22941;
    classtype:attempted-admin;
    sid:2034033; rev:1;
    metadata:attack_target Server, created_at 2021_09_27, cve CVE_2021_22941, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_09_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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