ET EXPLOIT Apache HTTP Server SSRF (CVE-2021-40438)

Query · suricata

flow:established,to_server;
urilen:>200;
http.method;
content:"GET";
http.uri;
content:"/?unix|3a|"; nocase; fast_pattern;
content:"|7c|http";
Raw source ET EXPLOIT Apache HTTP Server SSRF (CVE-2021-40438) · Suricata
Esc
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 Apache HTTP Server SSRF (CVE-2021-40438)";
    flow:established,to_server;
    urilen:>200;
    http.method;
    content:"GET";
    http.uri;
    content:"/?unix|3a|"; nocase; fast_pattern;
    content:"|7c|http";
    reference:cve,2021-40438;
    classtype:attempted-admin;
    sid:2034566; rev:2;
    metadata:attack_target Server, created_at 2021_11_30, cve CVE_2021_40438, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_11_30, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)

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