ET DOS Possible Memcached DDoS Amplification Inbound

Query · suricata

content:"STATS|20|pid"; depth:9; fast_pattern;
threshold:type both, count 100, seconds 60, track by_dst;
Raw source ET DOS Possible Memcached DDoS Amplification 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 udp $EXTERNAL_NET 11211 -> $HOME_NET any (
    msg:"ET DOS Possible Memcached DDoS Amplification Inbound";
    content:"STATS|20|pid"; depth:9; fast_pattern;
    threshold:type both, count 100, seconds 60, track by_dst;
    reference:url,blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/;
    classtype:attempted-dos;
    sid:2025403; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Linux, attack_target Client_Endpoint, created_at 2018_03_01, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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