ET EXPLOIT Citrix ShareFile Storage Zones Controller RCE Attempt (CVE-2021-22941)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/upload.aspx";
content:"id";
content:"|40|"; distance:0;
content:"|2e 2e 2f|"; distance:0;
content:"|2e|cshtml"; distance:0; fast_pattern;
content:"bp";
content:"accountid";
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|";
Raw source ET EXPLOIT Citrix ShareFile Storage Zones Controller RCE Attempt (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 Citrix ShareFile Storage Zones Controller RCE Attempt (CVE-2021-22941)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload.aspx";
    content:"id";
    content:"|40|"; distance:0;
    content:"|2e 2e 2f|"; distance:0;
    content:"|2e|cshtml"; distance:0; fast_pattern;
    content:"bp";
    content:"accountid";
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|";
    reference:cve,2021-22941;
    classtype:attempted-admin;
    sid:2034972; rev:2;
    metadata:attack_target Server, created_at 2022_01_25, cve CVE_2021_22941, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2022_01_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.