Prevent password updates for SAML and LDAP users

server/src/main/java/com/cloud/user/AccountManagerImpl.java

@@ -1459,6 +1459,8 @@ public UserAccount updateUser(UpdateUserCmd updateUserCmd) {
      * <ul>
      *  <li> If 'password' is blank, we throw an {@link InvalidParameterValueException};
      *  <li> If 'current password' is not provided and user is not an Admin, we throw an {@link InvalidParameterValueException};
+     *  <li> If the user whose password is being changed has a source equal to {@link User.Source#SAML2}, {@link User.Source#SAML2DISABLED} or {@link User.Source#LDAP},
+     *      we throw an {@link InvalidParameterValueException};
      *  <li> If a normal user is calling this method, we use {@link #validateCurrentPassword(UserVO, String)} to check if the provided old password matches the database one;
      * </ul>
      *
@@ -1473,6 +1475,12 @@ protected void validateUserPasswordAndUpdateIfNeeded(String newPassword, UserVO
             throw new InvalidParameterValueException("Password cannot be empty or blank.");
         }
 
+        User.Source userSource = user.getSource();
+        if (userSource == User.Source.SAML2 || userSource == User.Source.SAML2DISABLED || userSource == User.Source.LDAP) {
+            s_logger.warn(String.format("Unable to update the password for user [%d], as its source is [%s].", user.getId(), user.getSource().toString()));
+            throw new InvalidParameterValueException("CloudStack does not support updating passwords for SAML or LDAP users. Please contact your cloud administrator for assistance.");
+        }
+
         passwordPolicy.verifyIfPasswordCompliesWithPasswordPolicies(newPassword, user.getUsername(), getAccount(user.getAccountId()).getDomainId());
 
         Account callingAccount = getCurrentCallingAccount();

server/src/test/java/com/cloud/user/AccountManagerImplTest.java

@@ -745,6 +745,36 @@ public void validateUserPasswordAndUpdateIfNeededTestIfVerifyIfPasswordCompliesW
         accountManagerImpl.validateUserPasswordAndUpdateIfNeeded(newPassword, userVoMock, currentPassword);
     }
 
+    @Test(expected = InvalidParameterValueException.class)
+    public void validateUserPasswordAndUpdateIfNeededTestSaml2UserShouldNotBeAllowedToUpdateTheirPassword() {
+        String newPassword = "newPassword";
+        String currentPassword = "theCurrentPassword";
+
+        Mockito.when(userVoMock.getSource()).thenReturn(User.Source.SAML2);
+
+        accountManagerImpl.validateUserPasswordAndUpdateIfNeeded(newPassword, userVoMock, currentPassword);
+    }
+
+    @Test(expected = InvalidParameterValueException.class)
+    public void validateUserPasswordAndUpdateIfNeededTestSaml2DisabledUserShouldNotBeAllowedToUpdateTheirPassword() {
+        String newPassword = "newPassword";
+        String currentPassword = "theCurrentPassword";
+
+        Mockito.when(userVoMock.getSource()).thenReturn(User.Source.SAML2DISABLED);
+
+        accountManagerImpl.validateUserPasswordAndUpdateIfNeeded(newPassword, userVoMock, currentPassword);
+    }
+
+    @Test(expected = InvalidParameterValueException.class)
+    public void validateUserPasswordAndUpdateIfNeededTestLdapUserShouldNotBeAllowedToUpdateTheirPassword() {
+        String newPassword = "newPassword";
+        String currentPassword = "theCurrentPassword";
+
+        Mockito.when(userVoMock.getSource()).thenReturn(User.Source.LDAP);
+
+        accountManagerImpl.validateUserPasswordAndUpdateIfNeeded(newPassword, userVoMock, currentPassword);
+    }
+
     private String configureUserMockAuthenticators(String newPassword) {
         accountManagerImpl._userPasswordEncoders = new ArrayList<>();
         UserAuthenticator authenticatorMock1 = Mockito.mock(UserAuthenticator.class);