From 1c6b8752b891c1a25524d8dfaa8efb7176c0dbec Mon Sep 17 00:00:00 2001 From: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com> Date: Tue, 29 Sep 2020 12:36:44 +0100 Subject: [PATCH] Only assert valid next_link params when provided (#8417) Broken in https://github.com/matrix-org/synapse/pull/8275 and has yet to be put in a release. Fixes https://github.com/matrix-org/synapse/issues/8418. `next_link` is an optional parameter. However, we were checking whether the `next_link` param was valid, even if it wasn't provided. In that case, `next_link` was `None`, which would clearly not be a valid URL. This would prevent password reset and other operations if `next_link` was not provided, and the `next_link_domain_whitelist` config option was set. --- changelog.d/8417.feature | 1 + synapse/rest/client/v2_alpha/account.py | 15 +++++++++------ tests/rest/client/v2_alpha/test_account.py | 6 ++++++ 3 files changed, 16 insertions(+), 6 deletions(-) create mode 100644 changelog.d/8417.feature diff --git a/changelog.d/8417.feature b/changelog.d/8417.feature new file mode 100644 index 0000000000..17549c3df3 --- /dev/null +++ b/changelog.d/8417.feature @@ -0,0 +1 @@ +Add a config option to specify a whitelist of domains that a user can be redirected to after validating their email or phone number. \ No newline at end of file diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py index c3ce0f6259..9245214f36 100644 --- a/synapse/rest/client/v2_alpha/account.py +++ b/synapse/rest/client/v2_alpha/account.py @@ -103,8 +103,9 @@ class EmailPasswordRequestTokenRestServlet(RestServlet): Codes.THREEPID_DENIED, ) - # Raise if the provided next_link value isn't valid - assert_valid_next_link(self.hs, next_link) + if next_link: + # Raise if the provided next_link value isn't valid + assert_valid_next_link(self.hs, next_link) # The email will be sent to the stored address. # This avoids a potential account hijack by requesting a password reset to @@ -379,8 +380,9 @@ class EmailThreepidRequestTokenRestServlet(RestServlet): Codes.THREEPID_DENIED, ) - # Raise if the provided next_link value isn't valid - assert_valid_next_link(self.hs, next_link) + if next_link: + # Raise if the provided next_link value isn't valid + assert_valid_next_link(self.hs, next_link) existing_user_id = await self.store.get_user_id_by_threepid("email", email) @@ -453,8 +455,9 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet): Codes.THREEPID_DENIED, ) - # Raise if the provided next_link value isn't valid - assert_valid_next_link(self.hs, next_link) + if next_link: + # Raise if the provided next_link value isn't valid + assert_valid_next_link(self.hs, next_link) existing_user_id = await self.store.get_user_id_by_threepid("msisdn", msisdn) diff --git a/tests/rest/client/v2_alpha/test_account.py b/tests/rest/client/v2_alpha/test_account.py index 93f899d861..ae2cd67f35 100644 --- a/tests/rest/client/v2_alpha/test_account.py +++ b/tests/rest/client/v2_alpha/test_account.py @@ -732,6 +732,12 @@ class ThreepidEmailRestTestCase(unittest.HomeserverTestCase): @override_config({"next_link_domain_whitelist": ["example.com", "example.org"]}) def test_next_link_domain_whitelist(self): """Tests next_link parameters must fit the whitelist if provided""" + + # Ensure not providing a next_link parameter still works + self._request_token( + "something@example.com", "some_secret", next_link=None, expect_code=200, + ) + self._request_token( "something@example.com", "some_secret",