ET DOS SMB Tree_Connect Stack Overflow Attempt (CVE-2017-0016)

Query · suricata

flow:from_server,established;
content:"|FE|SMB"; offset:4; depth:4;
content:"|03 00|"; distance:8; within:2;
byte_test:1,&,1,2,relative;
byte_jump:2,8,little,from_beginning;
byte_jump:2,4,relative,little;
isdataat:1000,relative;
content:!"|FE|SMB"; within:1000;
Raw source ET DOS SMB Tree_Connect Stack Overflow Attempt (CVE-2017-0016) · 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 any 445 -> $HOME_NET any (
    msg:"ET DOS SMB Tree_Connect Stack Overflow Attempt (CVE-2017-0016)";
    flow:from_server,established;
    content:"|FE|SMB"; offset:4; depth:4;
    content:"|03 00|"; distance:8; within:2;
    byte_test:1,&,1,2,relative;
    byte_jump:2,8,little,from_beginning;
    byte_jump:2,4,relative,little;
    isdataat:1000,relative;
    content:!"|FE|SMB"; within:1000;
    reference:cve,2017-0016;
    classtype:attempted-dos;
    sid:2023832; rev:3;
    metadata:affected_product SMBv3, attack_target Client_and_Server, created_at 2017_02_03, cve CVE_2017_0016, deployment Datacenter, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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