ET NETBIOS Microsoft Windows Server 2003 Active Directory Pre-Auth BROWSER ELECTION Heap Overflow Attempt

Query · suricata

content:"|42 4F 00|";
content:"BROWSER"; nocase; distance:0;
content:"|08 09 A8 0F 01 20|"; fast_pattern; distance:0;
isdataat:65,relative;
content:!"|0A|"; within:65;
Raw source ET NETBIOS Microsoft Windows Server 2003 Active Directory Pre-Auth BROWSER ELECTION Heap 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 udp $EXTERNAL_NET any -> $HOME_NET [137,138,139,445] (
    msg:"ET NETBIOS Microsoft Windows Server 2003 Active Directory Pre-Auth BROWSER ELECTION Heap Overflow Attempt";
    content:"|42 4F 00|";
    content:"BROWSER"; nocase; distance:0;
    content:"|08 09 A8 0F 01 20|"; fast_pattern; distance:0;
    isdataat:65,relative;
    content:!"|0A|"; within:65;
    reference:url,tools.cisco.com/security/center/viewAlert.x?alertId=22457;
    reference:bid,46360;
    classtype:attempted-admin;
    sid:2012317; rev:2;
    metadata:created_at 2011_02_18, confidence Low, signature_severity Major, updated_at 2019_07_26;
)

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