[radar-gateway] Configure radar-gataway to mitigate XSS attack vector #198
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Nginx decodes the uri before passing it to the backend server. This is dangerous because it can allow for XSS attacks. Grizzly servers have a bug where they send the decoded uri as part of error messages (see Graylog2/graylog2-server#3171). To prevent this, we need to re-encode the uri ($request_uri is the original encoded request) before passing it to the Grizzly server.
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Background
Nginx decodes the uri before passing it to the backend server. This is dangerous because it can allow for XSS attacks. Grizzly servers have a bug where they send the decoded uri as part of error messages (see Graylog2/graylog2-server#3171).
Change
To prevent XSS attacks, we need to re-encode the uri ($request_uri is the original encoded request) before passing it to the Grizzly server.