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Fix CSP headers being unintendedly wide (#26105)

gh/stable
Claire 2023-07-21 13:34:15 +02:00
parent d94a2c8aca
commit 889102013f
2 changed files with 28 additions and 1 deletions
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2
config/initializers/content_security_policy.rb
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@ -3,7 +3,7 @@
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
def host_to_url(str) def host_to_url(str)
"http#{Rails.configuration.x.use_https ? 's' : ''}://#{str}".split('/').first if str.present? "http#{Rails.configuration.x.use_https ? 's' : ''}://#{str.split('/').first}" if str.present?
end end
base_host = Rails.configuration.x.web_domain base_host = Rails.configuration.x.web_domain

27
spec/requests/content_security_policy_spec.rb 100644
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@ -0,0 +1,27 @@
# frozen_string_literal: true
require 'rails_helper'
describe 'Content-Security-Policy' do
it 'sets the expected CSP headers' do
allow(SecureRandom).to receive(:base64).with(16).and_return('ZbA+JmE7+bK8F5qvADZHuQ==')
get '/'
expect(response.headers['Content-Security-Policy'].split(';').map(&:strip)).to contain_exactly(
"base-uri 'none'",
"default-src 'none'",
"frame-ancestors 'none'",
"font-src 'self' https://cb6e6126.ngrok.io",
"img-src 'self' https: data: blob: https://cb6e6126.ngrok.io",
"style-src 'self' https://cb6e6126.ngrok.io 'nonce-ZbA+JmE7+bK8F5qvADZHuQ=='",
"media-src 'self' https: data: https://cb6e6126.ngrok.io",
"frame-src 'self' https:",
"manifest-src 'self' https://cb6e6126.ngrok.io",
"form-action 'self'",
"child-src 'self' blob: https://cb6e6126.ngrok.io",
"worker-src 'self' blob: https://cb6e6126.ngrok.io",
"connect-src 'self' data: blob: https://cb6e6126.ngrok.io https://cb6e6126.ngrok.io ws://localhost:4000",
"script-src 'self' https://cb6e6126.ngrok.io 'wasm-unsafe-eval'"
)
end
end