ET POLICY External Oracle T3 Requests Inbound

Query · suricata

flow:established,to_server;
content:"t3|20|"; startswith;
content:"|0a|AS|3a|"; distance:0; fast_pattern;
content:"|0a|HL|3a|"; distance:0;
content:"|0a 0a|"; endswith;
Raw source ET POLICY External Oracle T3 Requests Inbound · 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 $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET POLICY External Oracle T3 Requests Inbound";
    flow:established,to_server;
    content:"t3|20|"; startswith;
    content:"|0a|AS|3a|"; distance:0; fast_pattern;
    content:"|0a|HL|3a|"; distance:0;
    content:"|0a 0a|"; endswith;
    classtype:policy-violation;
    sid:2030129; rev:2;
    metadata:attack_target Server, created_at 2020_05_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_08;
)

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