ET EXPLOIT Windows HTTP Protocol Stack UAF/RCE (CVE-2021-31166), http.sys DOS (CVE-2022-21907) Inbound

Query · suricata

flow:established,to_server;
http.accept_enc;
content:",|20|,"; fast_pattern;
Raw source ET EXPLOIT Windows HTTP Protocol Stack UAF/RCE (CVE-2021-31166), http.sys DOS (CVE-2022-21907) Inbound · 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 any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Windows HTTP Protocol Stack UAF/RCE (CVE-2021-31166), http.sys DOS (CVE-2022-21907) Inbound";
    flow:established,to_server;
    http.accept_enc;
    content:",|20|,"; fast_pattern;
    reference:url,github.com/0vercl0k/CVE-2021-31166;
    reference:cve,2021-31166;
    classtype:attempted-admin;
    sid:2032962; rev:1;
    metadata:attack_target Server, created_at 2021_05_17, cve CVE_2021_31166, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_05_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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