ET WEB_SERVER Possible SQLi Attempt in User Agent (Inbound)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"select"; nocase; distance:0; fast_pattern;
content:"from"; nocase; within:20;
Raw source ET WEB_SERVER Possible SQLi Attempt in User Agent (Inbound) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET WEB_SERVER Possible SQLi Attempt in User Agent (Inbound)";
    flow:established,to_server;
    http.user_agent;
    content:"select"; nocase; distance:0; fast_pattern;
    content:"from"; nocase; within:20;
    reference:url,blog.cloudflare.com/the-sleepy-user-agent/;
    classtype:trojan-activity;
    sid:2022816; rev:4;
    metadata:created_at 2016_05_17, confidence Medium, signature_severity Major, updated_at 2020_08_20;
)

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