ET WEB_SERVER IIS 8.3 Filename With Wildcard (Possible File/Dir Bruteforce)

Query · suricata

flow:established,to_server;
http.uri;
content:"~1"; fast_pattern;
pcre:"/([\*\?]~1|~1\.?[\*\?]|\/~1\/)/";
Raw source ET WEB_SERVER IIS 8.3 Filename With Wildcard (Possible File/Dir Bruteforce) · 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 $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET WEB_SERVER IIS 8.3 Filename With Wildcard (Possible File/Dir Bruteforce)";
    flow:established,to_server;
    http.uri;
    content:"~1"; fast_pattern;
    pcre:"/([\*\?]~1|~1\.?[\*\?]|\/~1\/)/";
    reference:url,soroush.secproject.com/downloadable/microsoft_iis_tilde_character_vulnerability_feature.pdf;
    classtype:network-scan;
    sid:2015023; rev:5;
    metadata:created_at 2012_07_04, confidence Medium, signature_severity Minor, updated_at 2020_09_17;
)

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