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|
# frozen_string_literal: true
require "abstract_unit"
require "ipaddr"
class HostAuthorizationTest < ActionDispatch::IntegrationTest
App = -> env { [200, {}, %w(Success)] }
test "blocks requests to unallowed host" do
@app = ActionDispatch::HostAuthorization.new(App, %w(only.com))
get "/"
assert_response :forbidden
assert_match "Blocked host: www.example.com", response.body
end
test "allows all requests if hosts is empty" do
@app = ActionDispatch::HostAuthorization.new(App, nil)
get "/"
assert_response :ok
assert_equal "Success", body
end
test "hosts can be a single element array" do
@app = ActionDispatch::HostAuthorization.new(App, %w(www.example.com))
get "/"
assert_response :ok
assert_equal "Success", body
end
test "hosts can be a string" do
@app = ActionDispatch::HostAuthorization.new(App, "www.example.com")
get "/"
assert_response :ok
assert_equal "Success", body
end
test "passes requests to allowed hosts with domain name notation" do
@app = ActionDispatch::HostAuthorization.new(App, ".example.com")
get "/"
assert_response :ok
assert_equal "Success", body
end
test "does not allow domain name notation in the HOST header itself" do
@app = ActionDispatch::HostAuthorization.new(App, ".example.com")
get "/", env: {
"HOST" => ".example.com",
}
assert_response :forbidden
assert_match "Blocked host: .example.com", response.body
end
test "checks for requests with #=== to support wider range of host checks" do
@app = ActionDispatch::HostAuthorization.new(App, [-> input { input == "www.example.com" }])
get "/"
assert_response :ok
assert_equal "Success", body
end
test "mark the host when authorized" do
@app = ActionDispatch::HostAuthorization.new(App, ".example.com")
get "/"
assert_equal "www.example.com", request.get_header("action_dispatch.authorized_host")
end
test "sanitizes regular expressions to prevent accidental matches" do
@app = ActionDispatch::HostAuthorization.new(App, [/w.example.co/])
get "/"
assert_response :forbidden
assert_match "Blocked host: www.example.com", response.body
end
test "blocks requests to unallowed host supporting custom responses" do
@app = ActionDispatch::HostAuthorization.new(App, ["w.example.co"], -> env do
[401, {}, %w(Custom)]
end)
get "/"
assert_response :unauthorized
assert_equal "Custom", body
end
test "localhost works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "localhost:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV4 works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "127.0.0.1",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV4 with port works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "127.0.0.1:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV4 binding in all addresses works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "0.0.0.0",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV4 with port binding in all addresses works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "0.0.0.0:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV6 works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "::1",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV6 with port works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "[::1]:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV6 binding in all addresses works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "::",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "localhost using IPV6 with port binding in all addresses works in dev" do
@app = ActionDispatch::HostAuthorization.new(App, ActionDispatch::HostAuthorization::ALLOWED_HOSTS_IN_DEVELOPMENT)
get "/", env: {
"HOST" => "[::]:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "hosts with port works" do
@app = ActionDispatch::HostAuthorization.new(App, ["host.test"])
get "/", env: {
"HOST" => "host.test:3000",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :ok
assert_match "Success", response.body
end
test "blocks requests with spoofed X-FORWARDED-HOST" do
@app = ActionDispatch::HostAuthorization.new(App, [IPAddr.new("127.0.0.1")])
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "127.0.0.1",
"HOST" => "www.example.com",
}
assert_response :forbidden
assert_match "Blocked host: 127.0.0.1", response.body
end
test "blocks requests with spoofed relative X-FORWARDED-HOST" do
@app = ActionDispatch::HostAuthorization.new(App, ["www.example.com"])
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "//randomhost.com",
"HOST" => "www.example.com",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :forbidden
assert_match "Blocked host: //randomhost.com", response.body
end
test "forwarded secondary hosts are allowed when permitted" do
@app = ActionDispatch::HostAuthorization.new(App, ".domain.com")
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "example.com, my-sub.domain.com",
"HOST" => "domain.com",
}
assert_response :ok
assert_equal "Success", body
end
test "forwarded secondary hosts are blocked when mismatch" do
@app = ActionDispatch::HostAuthorization.new(App, "domain.com")
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "domain.com, evil.com",
"HOST" => "domain.com",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :forbidden
assert_match "Blocked host: evil.com", response.body
end
test "does not consider IP addresses in X-FORWARDED-HOST spoofed when disabled" do
@app = ActionDispatch::HostAuthorization.new(App, nil)
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "127.0.0.1",
"HOST" => "www.example.com",
}
assert_response :ok
assert_equal "Success", body
end
test "detects localhost domain spoofing" do
@app = ActionDispatch::HostAuthorization.new(App, "localhost")
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "localhost",
"HOST" => "www.example.com",
}
assert_response :forbidden
assert_match "Blocked host: localhost", response.body
end
test "forwarded hosts should be permitted" do
@app = ActionDispatch::HostAuthorization.new(App, "domain.com")
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "sub.domain.com",
"HOST" => "domain.com",
}
assert_response :forbidden
assert_match "Blocked host: sub.domain.com", response.body
end
test "sub-sub domains should not be permitted" do
@app = ActionDispatch::HostAuthorization.new(App, ".domain.com")
get "/", env: {
"HOST" => "secondary.sub.domain.com",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :forbidden
assert_match "Blocked host: secondary.sub.domain.com", response.body
end
test "forwarded hosts are allowed when permitted" do
@app = ActionDispatch::HostAuthorization.new(App, ".domain.com")
get "/", env: {
"HTTP_X_FORWARDED_HOST" => "my-sub.domain.com",
"HOST" => "domain.com",
}
assert_response :ok
assert_equal "Success", body
end
test "only compare to valid hostnames" do
@app = ActionDispatch::HostAuthorization.new(App, ".example.com")
get "/", env: {
"HOST" => "attacker.com#x.example.com",
}
assert_response :forbidden
assert_match "Blocked host: attacker.com#x.example.com", response.body
end
test "lots of NG hosts" do
ng_hosts = [
"hacker%E3%80%82com",
"hacker%00.com",
"www.theirsite.com@yoursite.com",
"hacker.com/test/",
"hacker%252ecom",
".hacker.com",
"/\/\/hacker.com/",
"/hacker.com",
"../hacker.com",
".hacker.com",
"@hacker.com",
"hacker.com",
"hacker.com%23@example.com",
"hacker.com/.jpg",
"hacker.com\texample.com/",
"hacker.com/example.com",
"hacker.com\@example.com",
"hacker.com/example.com",
"hacker.com/"
]
@app = ActionDispatch::HostAuthorization.new(App, "example.com")
ng_hosts.each do |host|
get "/", env: {
"HTTP_X_FORWARDED_HOST" => host,
"HOST" => "example.com",
"action_dispatch.show_detailed_exceptions" => true
}
assert_response :forbidden
assert_match "Blocked host: #{host}", response.body
end
end
end
|
