GPL FTP invalid MDTM command attempt

Query · suricata

flow:to_server,established;
content:"MDTM"; fast_pattern; nocase;
pcre:"/^MDTM \d+[-+]\D/smi";
Raw source GPL FTP invalid MDTM command attempt · 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 ftp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"GPL FTP invalid MDTM command attempt";
    flow:to_server,established;
    content:"MDTM"; fast_pattern; nocase;
    pcre:"/^MDTM \d+[-+]\D/smi";
    reference:bugtraq,9751;
    reference:cve,2001-1021;
    reference:cve,2004-0330;
    classtype:attempted-admin;
    sid:2102416; rev:8;
    metadata:created_at 2010_09_23, cve CVE_2001_1021, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

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