ET EXPLOIT Zoho ManagedEngine Desktop Central Authentication Bypass - File Upload Attempt (CVE-2021-44515)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/STATE_ID/"; startswith;
content:"/agentLogUploader?"; distance:0;
content:"filename="; nocase; distance:0;
pcre:"/^[a-zA-Z0-9]+\.(?:zip|7z|gz)/Ri";
content:"branchofficeid="; nocase;
http.cookie;
content:"STATE_COOKIE=";
target:dest_ip;
Raw source ET EXPLOIT Zoho ManagedEngine Desktop Central Authentication Bypass - File Upload Attempt (CVE-2021-44515) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT Zoho ManagedEngine Desktop Central Authentication Bypass - File Upload Attempt (CVE-2021-44515)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/STATE_ID/"; startswith;
    content:"/agentLogUploader?"; distance:0;
    content:"filename="; nocase; distance:0;
    pcre:"/^[a-zA-Z0-9]+\.(?:zip|7z|gz)/Ri";
    content:"branchofficeid="; nocase;
    http.cookie;
    content:"STATE_COOKIE=";
    reference:url,attackerkb.com/topics/rJw4DFI2RQ/cve-2021-44515/rapid7-analysis;
    reference:cve,2021-44515;
    classtype:attempted-admin;
    sid:2034957; rev:2;
    metadata:created_at 2022_01_24, cve CVE_2021_44515, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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