ET EXPLOIT Possible NGINX Reference LDAP Query Injection Attack

Query · suricata

flow:established,to_server;
http.header;
content:"|0d 0a|X-Ldap-Template|3a 20|"; fast_pattern; nocase;
content:"|28 7c|"; distance:0; within:5;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET EXPLOIT Possible NGINX Reference LDAP Query Injection Attack · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT Possible NGINX Reference LDAP Query Injection Attack";
    flow:established,to_server;
    http.header;
    content:"|0d 0a|X-Ldap-Template|3a 20|"; fast_pattern; nocase;
    content:"|28 7c|"; distance:0; within:5;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,github.com/nginxinc/nginx-ldap-auth/issues/93;
    classtype:attempted-admin;
    sid:2035897; rev:2;
    metadata:attack_target Web_Server, created_at 2022_04_12, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_12, reviewed_at 2023_09_01;
)

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