ET WEB_SERVER Possible HTTP 403 XSS Attempt (Local Source)

Query · suricata

flow:from_server,established;
http.stat_code;
content:"403";
file.data;
content:"<script"; nocase; depth:512;
content:!"location.replace|28 22|https|3a 2f 2f|block.opendns.com"; distance:0;
Raw source ET WEB_SERVER Possible HTTP 403 XSS Attempt (Local Source) · Suricata
Esc
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 any (
    msg:"ET WEB_SERVER Possible HTTP 403 XSS Attempt (Local Source)";
    flow:from_server,established;
    http.stat_code;
    content:"403";
    file.data;
    content:"<script"; nocase; depth:512;
    content:!"location.replace|28 22|https|3a 2f 2f|block.opendns.com"; distance:0;
    classtype:web-application-attack;
    sid:2010515; rev:7;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2020_08_13;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.