patterns/waf_patterns/nginx/java.conf

# Nginx WAF rules for JAVA
location / {
    set $attack_detected 0;

    if ($request_uri ~* "(?i)(?:$|$?)(?:{|&l(?:brace|cub);?)(?:[^}]*(?:$|$?)(?:{|&l(?:brace|cub);?)|jndi|ctx)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)(?:$|$?)(?:{|&l(?:brace|cub);?)(?:[^}]{0,15}(?:$|$?)(?:{|&l(?:brace|cub);?)|jndi|ctx)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "javab.+(?:runtime|processbuilder)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:class.module.classLoader.resources.context.parent.pipeline|springframework.context.support.FileSystemXmlApplicationContext)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "xacxedx00x05") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "java.lang.(?:runtime|processbuilder)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:clonetransformer|forclosure|instantiatefactory|instantiatetransformer|invokertransformer|prototypeclonefactory|prototypeserializationfactory|whileclosure|getproperty|filewriter|xmldecoder)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:runtime|processbuilder)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* ".*.(?:jsp|jspx).*$") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)(?:$|$?)(?:{|&l(?:brace|cub);?)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:rO0ABQ|KztAAU|Cs7QAF)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:cnVudGltZQ|HJ1bnRpbWU|BydW50aW1l|cHJvY2Vzc2J1aWxkZXI|HByb2Nlc3NidWlsZGVy|Bwcm9jZXNzYnVpbGRlcg|Y2xvbmV0cmFuc2Zvcm1lcg|GNsb25ldHJhbnNmb3JtZXI|BjbG9uZXRyYW5zZm9ybWVy|Zm9yY2xvc3VyZQ|GZvcmNsb3N1cmU|Bmb3JjbG9zdXJl|aW5zdGFudGlhdGVmYWN0b3J5|Gluc3RhbnRpYXRlZmFjdG9yeQ|BpbnN0YW50aWF0ZWZhY3Rvcnk|aW5zdGFudGlhdGV0cmFuc2Zvcm1lcg|Gluc3RhbnRpYXRldHJhbnNmb3JtZXI|BpbnN0YW50aWF0ZXRyYW5zZm9ybWVy|aW52b2tlcnRyYW5zZm9ybWVy|Gludm9rZXJ0cmFuc2Zvcm1lcg|BpbnZva2VydHJhbnNmb3JtZXI|cHJvdG90eXBlY2xvbmVmYWN0b3J5|HByb3RvdHlwZWNsb25lZmFjdG9yeQ|Bwcm90b3R5cGVjbG9uZWZhY3Rvcnk|cHJvdG90eXBlc2VyaWFsaXphdGlvbmZhY3Rvcnk|HByb3RvdHlwZXNlcmlhbGl6YXRpb25mYWN0b3J5|Bwcm90b3R5cGVzZXJpYWxpemF0aW9uZmFjdG9yeQ|d2hpbGVjbG9zdXJl|HdoaWxlY2xvc3VyZQ|B3aGlsZWNsb3N1cmU)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?:unmarshaller|base64data|java.)") {
        set $attack_detected 1;
    }

    if ($attack_detected = 1) {
        return 403;
    }
}