GPL IMAP authenticate overflow attempt

Query · suricata

flow:established,to_server;
content:"AUTHENTICATE"; nocase;
isdataat:100,relative;
pcre:"/\sAUTHENTICATE\s[^\n]{100}/smi";
Raw source GPL IMAP authenticate overflow attempt · Suricata
Esc
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 143 (
    msg:"GPL IMAP authenticate overflow attempt";
    flow:established,to_server;
    content:"AUTHENTICATE"; nocase;
    isdataat:100,relative;
    pcre:"/\sAUTHENTICATE\s[^\n]{100}/smi";
    reference:bugtraq,12995;
    reference:bugtraq,130;
    reference:cve,1999-0005;
    reference:cve,1999-0042;
    reference:nessus,10292;
    classtype:misc-attack;
    sid:2101844; rev:12;
    metadata:created_at 2010_09_23, cve CVE_1999_0005, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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