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`FinalDestination::HTTP` is our patch of `Net::HTTP` which defend us against SSRF and DNS rebinding attacks.
28 lines
1.0 KiB
Ruby
28 lines
1.0 KiB
Ruby
# frozen_string_literal: true
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# This is a patch to avoid the direct use of `Net::HTTP` in the `webpush` gem and instead rely on `FinalDestination::HTTP`
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# which protects us from DNS rebinding attacks as well as server side forgery requests.
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#
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# This patch is considered temporary until we can decide on a longer term solution. In the meantime, we need to patch
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# the SSRF vulnerability being exposed by this gem.
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module WebPushPatch
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def perform
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http = FinalDestination::HTTP.new(uri.host, uri.port, *proxy_options)
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http.use_ssl = true
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http.ssl_timeout = @options[:ssl_timeout] unless @options[:ssl_timeout].nil?
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http.open_timeout = @options[:open_timeout] unless @options[:open_timeout].nil?
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http.read_timeout = @options[:read_timeout] unless @options[:read_timeout].nil?
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req = FinalDestination::HTTP::Post.new(uri.request_uri, headers)
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req.body = body
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resp = http.request(req)
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verify_response(resp)
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resp
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end
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end
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klass = defined?(WebPush) ? WebPush : Webpush
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klass::Request.prepend(WebPushPatch)
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