Allow password change for OTPW sessions

When provisioning new admin users on TrueNAS the sysadmin may
provide the user with a one-time password in order to set up
their own credentials. This means that OTPW authentication should
be allowed to set the associated user's password.

src/middlewared/middlewared/plugins/account.py

@@ -1537,16 +1537,19 @@ async def set_password(self, app, data):
         password changes will be rejected if the payload does not match the
         currently-authenticated user.
 
-        API keys granting access to this endpoint will be able to reset
-        the password of any user.
+        NOTE: users authenticated with a one-time password will be able
+        to change the password without submitting a second time.
         """
 
         verrors = ValidationErrors()
         is_full_admin = credential_has_full_admin(app.authenticated_credentials)
+        is_otp_login = False
         authenticated_user = None
 
         if app.authenticated_credentials.is_user_session:
             authenticated_user = app.authenticated_credentials.user['username']
+            if 'OTPW' in app.authenticated_credentials.user['account_attributes']:
+                is_otp_login = True
 
         username = data['username']
         password = data['new_password']
@@ -1580,7 +1583,9 @@ async def set_password(self, app, data):
                     f'{username}: user is not local to the TrueNAS server.'
                 )
 
-        if not is_full_admin:
+        # Require submitting password twice if this is not a full admin session
+        # and does not have a one-time password.
+        if not is_full_admin and not is_otp_login:
             if data['old_password'] is None:
                 verrors.add(
                     'user.set_password.old_password',

tests/api2/test_password_reset.py

@@ -138,3 +138,23 @@ def test_restricted_user_set_password():
                     'old_password': TEST_PASSWORD2,
                     'new_password': TEST_PASSWORD2_2
                 })
+
+
+def test_password_reset_via_onetime_password():
+    with unprivileged_user(
+        username=TEST_USERNAME,
+        group_name=TEST_GROUPNAME,
+        privilege_name='TEST_PASSWD_RESET_PRIVILEGE',
+        web_shell=False,
+        roles=['READONLY_ADMIN']
+    ) as acct:
+        otp = call('auth.generate_onetime_password', {'username': acct.username})
+        with client(auth=(acct.username, otp)) as c:
+            c.call('user.set_password', {
+                'username': TEST_USERNAME,
+                'new_password': TEST_PASSWORD2_2
+            })
+
+        # Verify that password change worked
+        with client(auth=(acct.username, TEST_PASSWORD2_2)):
+            pass