ET WEB_SERVER OptionsBleed (CVE-2017-9798)

Query · suricata

flow:from_server;
http.header;
content:"Allow|3a 20|";
pcre:"/^[^\n]+(?:[^ -~\x0d\x0a]|,\x20*,)/R";
Raw source ET WEB_SERVER OptionsBleed (CVE-2017-9798) · 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 any (
    msg:"ET WEB_SERVER OptionsBleed (CVE-2017-9798)";
    flow:from_server;
    http.header;
    content:"Allow|3a 20|";
    pcre:"/^[^\n]+(?:[^ -~\x0d\x0a]|,\x20*,)/R";
    reference:cve,CVE-2017-9798;
    classtype:misc-activity;
    sid:2024760; rev:5;
    metadata:affected_product Apache_HTTP_server, attack_target Server, created_at 2017_09_19, deployment Datacenter, performance_impact Significant, signature_severity Minor, updated_at 2020_08_12;
)

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