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invite: Fix validation of referred_by field.

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Previously, we could 500 if an organization administrator scanned
possible PreregistrationUser IDs looking for a valid invitation they
can interact with.

They couldn't do anything, so no security issue, but this fixes that
case to just be a 400 error as it should be.
This commit is contained in:
Tim Abbott
2019-03-21 15:37:15 -07:00
parent 1599625328
commit 3da06fecd5
2 changed files with 7 additions and 1 deletions
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4
zerver/lib/actions.py
View File

@@ -4957,6 +4957,10 @@ def do_revoke_multi_use_invite(multiuse_invite: MultiuseInvite) -> None:
notify_invites_changed(multiuse_invite.referred_by) notify_invites_changed(multiuse_invite.referred_by)
def do_resend_user_invite_email(prereg_user: PreregistrationUser) -> int: def do_resend_user_invite_email(prereg_user: PreregistrationUser) -> int:
# These are two structurally for the caller's code path.
assert prereg_user.referred_by is not None
assert prereg_user.realm is not None
check_invite_limit(prereg_user.referred_by.realm, 1) check_invite_limit(prereg_user.referred_by.realm, 1)
prereg_user.invited_at = timezone_now() prereg_user.invited_at = timezone_now()

4
zerver/views/invite.py
View File

@@ -109,7 +109,9 @@ def resend_user_invite_email(request: HttpRequest, user_profile: UserProfile,
except PreregistrationUser.DoesNotExist: except PreregistrationUser.DoesNotExist:
raise JsonableError(_("No such invitation")) raise JsonableError(_("No such invitation"))
if (prereg_user.referred_by.realm != user_profile.realm): # Structurally, any invitation the user can actually access should
# have a referred_by set for the user who created it.
if prereg_user.referred_by is None or prereg_user.referred_by.realm != user_profile.realm:
raise JsonableError(_("No such invitation")) raise JsonableError(_("No such invitation"))
timestamp = do_resend_user_invite_email(prereg_user) timestamp = do_resend_user_invite_email(prereg_user)