GPL FTP CWD overflow attempt

Query · suricata

flow:to_server,established;
content:"CWD"; nocase;
isdataat:100,relative;
pcre:"/^CWD\s[^\n]{100}/smi";
Raw source GPL FTP CWD overflow 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 CWD overflow attempt";
    flow:to_server,established;
    content:"CWD"; nocase;
    isdataat:100,relative;
    pcre:"/^CWD\s[^\n]{100}/smi";
    reference:bugtraq,11069;
    reference:bugtraq,1227;
    reference:bugtraq,1690;
    reference:bugtraq,6869;
    reference:bugtraq,7251;
    reference:bugtraq,7950;
    reference:cve,1999-0219;
    reference:cve,1999-1058;
    reference:cve,1999-1510;
    reference:cve,2000-1035;
    reference:cve,2000-1194;
    reference:cve,2001-0781;
    reference:cve,2002-0126;
    reference:cve,2002-0405;
    classtype:attempted-admin;
    sid:2101919; rev:24;
    metadata:created_at 2010_09_23, cve CVE_1999_0219, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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