ET WEB_SERVER Possible HTTP 401 XSS Attempt (Local Source)

Query · suricata

flow:from_server,established;
threshold:type threshold,track by_src,count 10,seconds 60;
http.stat_code;
content:"401";
http.stat_msg;
content:"Unauthorized"; nocase;
file.data;
content:"<script"; nocase; depth:280; fast_pattern;
Raw source ET WEB_SERVER Possible HTTP 401 XSS Attempt (Local Source) · 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 http $HTTP_SERVERS any -> $EXTERNAL_NET 1024: (
    msg:"ET WEB_SERVER Possible HTTP 401 XSS Attempt (Local Source)";
    flow:from_server,established;
    threshold:type threshold,track by_src,count 10,seconds 60;
    http.stat_code;
    content:"401";
    http.stat_msg;
    content:"Unauthorized"; nocase;
    file.data;
    content:"<script"; nocase; depth:280; fast_pattern;
    classtype:web-application-attack;
    sid:2010513; rev:8;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Minor, updated_at 2020_11_02;
)

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