ET EXPLOIT Windows DNS Server RCE Attempt Inbound (CVE-2021-26897)

Query · suricata

dsize:>1300;
content:"|29 00|"; offset:2; depth:2;
threshold:type limit, count 45, seconds 90, track by_src;
Raw source ET EXPLOIT Windows DNS Server RCE Attempt Inbound (CVE-2021-26897) · 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 any -> $DNS_SERVERS 53 (
    msg:"ET EXPLOIT Windows DNS Server RCE Attempt Inbound (CVE-2021-26897)";
    dsize:>1300;
    content:"|29 00|"; offset:2; depth:2;
    threshold:type limit, count 45, seconds 90, track by_src;
    reference:cve,2021-26897;
    classtype:attempted-admin;
    sid:2032348; rev:1;
    metadata:attack_target DNS_Server, created_at 2021_03_30, cve CVE_2021_26897, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_30;
)

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