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Added more `redirect_uri` checks to prevent redirect to not explicitly listed URI.

This commit is contained in:
Ivan Tashkinov 2019-06-18 17:00:49 +03:00
parent 3d76420512
commit 9f45f93949
2 changed files with 153 additions and 43 deletions
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44
lib/pleroma/web/oauth/oauth_controller.ex
View File

@ -64,26 +64,34 @@ defp do_authorize(%Plug.Conn{} = conn, params) do
defp handle_existing_authorization(
%Plug.Conn{assigns: %{token: %Token{} = token}} = conn,
params
%{"redirect_uri" => @oob_token_redirect_uri}
) do
token = Repo.preload(token, :app)
render(conn, "oob_token_exists.html", %{token: token})
end
defp handle_existing_authorization(
%Plug.Conn{assigns: %{token: %Token{} = token}} = conn,
%{} = params
) do
app = Repo.preload(token, :app).app
redirect_uri =
if is_binary(params["redirect_uri"]) do
params["redirect_uri"]
else
default_redirect_uri(token.app)
default_redirect_uri(app)
end
if redirect_uri in String.split(app.redirect_uris) do
redirect_uri = redirect_uri(conn, redirect_uri)
if redirect_uri == @oob_token_redirect_uri do
render(conn, "oob_token_exists.html", %{token: token})
else
url_params = %{access_token: token.token}
url_params = UriHelper.append_param_if_present(url_params, :state, params["state"])
url = UriHelper.append_uri_params(redirect_uri, url_params)
redirect(conn, external: url)
else
conn
|> put_flash(:error, "Unlisted redirect_uri.")
|> redirect(external: redirect_uri(conn, redirect_uri))
end
end
@ -100,18 +108,28 @@ def create_authorization(
end
end
def after_create_authorization(%Plug.Conn{} = conn, %Authorization{} = auth, %{
"authorization" => %{"redirect_uri" => @oob_token_redirect_uri}
}) do
render(conn, "oob_authorization_created.html", %{auth: auth})
end
def after_create_authorization(%Plug.Conn{} = conn, %Authorization{} = auth, %{
"authorization" => %{"redirect_uri" => redirect_uri} = auth_attrs
}) do
redirect_uri = redirect_uri(conn, redirect_uri)
app = Repo.preload(auth, :app).app
if redirect_uri == @oob_token_redirect_uri do
render(conn, "oob_authorization_created.html", %{auth: auth})
else
# An extra safety measure before we redirect (the same check is being performed in `do_create_authorization/2`)
if redirect_uri in String.split(app.redirect_uris) do
redirect_uri = redirect_uri(conn, redirect_uri)
url_params = %{code: auth.token}
url_params = UriHelper.append_param_if_present(url_params, :state, auth_attrs["state"])
url = UriHelper.append_uri_params(redirect_uri, url_params)
redirect(conn, external: url)
else
conn
|> put_flash(:error, "Unlisted redirect_uri.")
|> redirect(external: redirect_uri(conn, redirect_uri))
end
end
@ -324,7 +342,7 @@ def callback(%Plug.Conn{} = conn, params) do
})
conn
|> put_session(:registration_id, registration.id)
|> put_session_registration_id(registration.id)
|> registration_details(%{"authorization" => registration_params})
end
else
@ -445,7 +463,7 @@ defp validate_scopes(app, params) do
|> Scopes.validates(app.scopes)
end
defp default_redirect_uri(%App{} = app) do
def default_redirect_uri(%App{} = app) do
app.redirect_uris
|> String.split()
|> Enum.at(0)

150
test/web/oauth/oauth_controller_test.exs
View File

@ -10,6 +10,7 @@ defmodule Pleroma.Web.OAuth.OAuthControllerTest do
alias Pleroma.Registration
alias Pleroma.Repo
alias Pleroma.Web.OAuth.Authorization
alias Pleroma.Web.OAuth.OAuthController
alias Pleroma.Web.OAuth.Token
@oauth_config_path [:oauth2, :issue_new_refresh_token]
@ -49,7 +50,7 @@ test "GET /oauth/authorize renders auth forms, including OAuth consumer form", %
%{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"scope" => "read"
}
)
@ -72,7 +73,7 @@ test "GET /oauth/prepare_request encodes parameters as `state` and redirects", %
"authorization" => %{
"scope" => "read follow",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "a_state"
}
}
@ -98,11 +99,12 @@ test "GET /oauth/prepare_request encodes parameters as `state` and redirects", %
test "with user-bound registration, GET /oauth/<provider>/callback redirects to `redirect_uri` with `code`",
%{app: app, conn: conn} do
registration = insert(:registration)
redirect_uri = OAuthController.default_redirect_uri(app)
state_params = %{
"scope" => Enum.join(app.scopes, " "),
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => ""
}
@ -121,7 +123,7 @@ test "with user-bound registration, GET /oauth/<provider>/callback redirects to
)
assert response = html_response(conn, 302)
assert redirected_to(conn) =~ ~r/#{app.redirect_uris}\?code=.+/
assert redirected_to(conn) =~ ~r/#{redirect_uri}\?code=.+/
end
end
@ -132,7 +134,7 @@ test "with user-unbound registration, GET /oauth/<provider>/callback renders reg
state_params = %{
"scope" => "read write",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "a_state"
}
@ -165,7 +167,7 @@ test "on authentication error, GET /oauth/<provider>/callback redirects to `redi
state_params = %{
"scope" => Enum.join(app.scopes, " "),
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => ""
}
@ -199,7 +201,7 @@ test "GET /oauth/registration_details renders registration details form", %{
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "a_state",
"nickname" => nil,
"email" => "john@doe.com"
@ -218,6 +220,7 @@ test "with valid params, POST /oauth/register?op=register redirects to `redirect
conn: conn
} do
registration = insert(:registration, user: nil, info: %{"nickname" => nil, "email" => nil})
redirect_uri = OAuthController.default_redirect_uri(app)
conn =
conn
@ -229,7 +232,7 @@ test "with valid params, POST /oauth/register?op=register redirects to `redirect
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => "a_state",
"nickname" => "availablenick",
"email" => "available@email.com"
@ -238,7 +241,36 @@ test "with valid params, POST /oauth/register?op=register redirects to `redirect
)
assert response = html_response(conn, 302)
assert redirected_to(conn) =~ ~r/#{app.redirect_uris}\?code=.+/
assert redirected_to(conn) =~ ~r/#{redirect_uri}\?code=.+/
end
test "with unlisted `redirect_uri`, POST /oauth/register?op=register results in HTTP 401",
%{
app: app,
conn: conn
} do
registration = insert(:registration, user: nil, info: %{"nickname" => nil, "email" => nil})
unlisted_redirect_uri = "http://cross-site-request.com"
conn =
conn
|> put_session(:registration_id, registration.id)
|> post(
"/oauth/register",
%{
"op" => "register",
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => unlisted_redirect_uri,
"state" => "a_state",
"nickname" => "availablenick",
"email" => "available@email.com"
}
}
)
assert response = html_response(conn, 401)
end
test "with invalid params, POST /oauth/register?op=register renders registration_details page",
@ -254,7 +286,7 @@ test "with invalid params, POST /oauth/register?op=register renders registration
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "a_state",
"nickname" => "availablenickname",
"email" => "available@email.com"
@ -286,6 +318,7 @@ test "with valid params, POST /oauth/register?op=connect redirects to `redirect_
} do
user = insert(:user, password_hash: Comeonin.Pbkdf2.hashpwsalt("testpassword"))
registration = insert(:registration, user: nil)
redirect_uri = OAuthController.default_redirect_uri(app)
conn =
conn
@ -297,7 +330,7 @@ test "with valid params, POST /oauth/register?op=connect redirects to `redirect_
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => "a_state",
"name" => user.nickname,
"password" => "testpassword"
@ -306,7 +339,37 @@ test "with valid params, POST /oauth/register?op=connect redirects to `redirect_
)
assert response = html_response(conn, 302)
assert redirected_to(conn) =~ ~r/#{app.redirect_uris}\?code=.+/
assert redirected_to(conn) =~ ~r/#{redirect_uri}\?code=.+/
end
test "with unlisted `redirect_uri`, POST /oauth/register?op=connect results in HTTP 401`",
%{
app: app,
conn: conn
} do
user = insert(:user, password_hash: Comeonin.Pbkdf2.hashpwsalt("testpassword"))
registration = insert(:registration, user: nil)
unlisted_redirect_uri = "http://cross-site-request.com"
conn =
conn
|> put_session(:registration_id, registration.id)
|> post(
"/oauth/register",
%{
"op" => "connect",
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => unlisted_redirect_uri,
"state" => "a_state",
"name" => user.nickname,
"password" => "testpassword"
}
}
)
assert response = html_response(conn, 401)
end
test "with invalid params, POST /oauth/register?op=connect renders registration_details page",
@ -322,7 +385,7 @@ test "with invalid params, POST /oauth/register?op=connect renders registration_
"authorization" => %{
"scopes" => app.scopes,
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "a_state",
"name" => user.nickname,
"password" => "wrong password"
@ -358,7 +421,7 @@ test "renders authentication page", %{app: app, conn: conn} do
%{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"scope" => "read"
}
)
@ -378,7 +441,7 @@ test "properly handles internal calls with `authorization`-wrapped params", %{
"authorization" => %{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"scope" => "read"
}
}
@ -399,7 +462,7 @@ test "renders authentication page if user is already authenticated but `force_lo
%{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"scope" => "read",
"force_login" => "true"
}
@ -423,7 +486,7 @@ test "with existing authentication and non-OOB `redirect_uri`, redirects to app
%{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"state" => "specific_client_state",
"scope" => "read"
}
@ -433,6 +496,31 @@ test "with existing authentication and non-OOB `redirect_uri`, redirects to app
"https://redirect.url?access_token=#{token.token}&state=specific_client_state"
end
test "with existing authentication and unlisted non-OOB `redirect_uri`, redirects without credentials",
%{
app: app,
conn: conn
} do
unlisted_redirect_uri = "http://cross-site-request.com"
token = insert(:oauth_token, app_id: app.id)
conn =
conn
|> put_session(:oauth_token, token.token)
|> get(
"/oauth/authorize",
%{
"response_type" => "code",
"client_id" => app.client_id,
"redirect_uri" => unlisted_redirect_uri,
"state" => "specific_client_state",
"scope" => "read"
}
)
assert redirected_to(conn) == unlisted_redirect_uri
end
test "with existing authentication and OOB `redirect_uri`, redirects to app with `token` and `state` params",
%{
app: app,
@ -461,6 +549,7 @@ test "with existing authentication and OOB `redirect_uri`, redirects to app with
test "redirects with oauth authorization" do
user = insert(:user)
app = insert(:oauth_app, scopes: ["read", "write", "follow"])
redirect_uri = OAuthController.default_redirect_uri(app)
conn =
build_conn()
@ -469,14 +558,14 @@ test "redirects with oauth authorization" do
"name" => user.nickname,
"password" => "test",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"scope" => "read write",
"state" => "statepassed"
}
})
target = redirected_to(conn)
assert target =~ app.redirect_uris
assert target =~ redirect_uri
query = URI.parse(target).query |> URI.query_decoder() |> Map.new()
@ -489,6 +578,7 @@ test "redirects with oauth authorization" do
test "returns 401 for wrong credentials", %{conn: conn} do
user = insert(:user)
app = insert(:oauth_app)
redirect_uri = OAuthController.default_redirect_uri(app)
result =
conn
@ -497,7 +587,7 @@ test "returns 401 for wrong credentials", %{conn: conn} do
"name" => user.nickname,
"password" => "wrong",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => "statepassed",
"scope" => Enum.join(app.scopes, " ")
}
@ -506,7 +596,7 @@ test "returns 401 for wrong credentials", %{conn: conn} do
# Keep the details
assert result =~ app.client_id
assert result =~ app.redirect_uris
assert result =~ redirect_uri
# Error message
assert result =~ "Invalid Username/Password"
@ -515,6 +605,7 @@ test "returns 401 for wrong credentials", %{conn: conn} do
test "returns 401 for missing scopes", %{conn: conn} do
user = insert(:user)
app = insert(:oauth_app)
redirect_uri = OAuthController.default_redirect_uri(app)
result =
conn
@ -523,7 +614,7 @@ test "returns 401 for missing scopes", %{conn: conn} do
"name" => user.nickname,
"password" => "test",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => "statepassed",
"scope" => ""
}
@ -532,7 +623,7 @@ test "returns 401 for missing scopes", %{conn: conn} do
# Keep the details
assert result =~ app.client_id
assert result =~ app.redirect_uris
assert result =~ redirect_uri
# Error message
assert result =~ "This action is outside the authorized scopes"
@ -541,6 +632,7 @@ test "returns 401 for missing scopes", %{conn: conn} do
test "returns 401 for scopes beyond app scopes", %{conn: conn} do
user = insert(:user)
app = insert(:oauth_app, scopes: ["read", "write"])
redirect_uri = OAuthController.default_redirect_uri(app)
result =
conn
@ -549,7 +641,7 @@ test "returns 401 for scopes beyond app scopes", %{conn: conn} do
"name" => user.nickname,
"password" => "test",
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => redirect_uri,
"state" => "statepassed",
"scope" => "read write follow"
}
@ -558,7 +650,7 @@ test "returns 401 for scopes beyond app scopes", %{conn: conn} do
# Keep the details
assert result =~ app.client_id
assert result =~ app.redirect_uris
assert result =~ redirect_uri
# Error message
assert result =~ "This action is outside the authorized scopes"
@ -577,7 +669,7 @@ test "issues a token for an all-body request" do
|> post("/oauth/token", %{
"grant_type" => "authorization_code",
"code" => auth.token,
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"client_id" => app.client_id,
"client_secret" => app.client_secret
})
@ -631,7 +723,7 @@ test "issues a token for request with HTTP basic auth client credentials" do
|> post("/oauth/token", %{
"grant_type" => "authorization_code",
"code" => auth.token,
"redirect_uri" => app.redirect_uris
"redirect_uri" => OAuthController.default_redirect_uri(app)
})
assert %{"access_token" => token, "scope" => scope} = json_response(conn, 200)
@ -676,7 +768,7 @@ test "rejects token exchange with invalid client credentials" do
|> post("/oauth/token", %{
"grant_type" => "authorization_code",
"code" => auth.token,
"redirect_uri" => app.redirect_uris
"redirect_uri" => OAuthController.default_redirect_uri(app)
})
assert resp = json_response(conn, 400)
@ -755,7 +847,7 @@ test "rejects an invalid authorization code" do
|> post("/oauth/token", %{
"grant_type" => "authorization_code",
"code" => "Imobviouslyinvalid",
"redirect_uri" => app.redirect_uris,
"redirect_uri" => OAuthController.default_redirect_uri(app),
"client_id" => app.client_id,
"client_secret" => app.client_secret
})