GPL FTP CWD Root directory transversal attempt

Query · suricata

flow:to_server,established;
content:"CWD"; nocase;
content:"C|3A 5C|"; distance:1; fast_pattern;
Raw source GPL FTP CWD Root directory transversal 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 tcp $EXTERNAL_NET any -> $HOME_NET 21 (
    msg:"GPL FTP CWD Root directory transversal attempt";
    flow:to_server,established;
    content:"CWD"; nocase;
    content:"C|3A 5C|"; distance:1; fast_pattern;
    reference:bugtraq,7674;
    reference:cve,2003-0392;
    reference:nessus,11677;
    classtype:protocol-command-decode;
    sid:2102125; rev:10;
    metadata:created_at 2010_09_23, cve CVE_2003_0392, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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