function UserPasswordResetTest::testResetImpersonation

Make sure that users cannot forge password reset URLs of other users.

File

core/modules/user/tests/src/Functional/UserPasswordResetTest.php, line 605

Class

UserPasswordResetTest

Ensure that password reset methods work as expected.

Namespace

Code

public function testResetImpersonation() : void {
  // Create two identical user accounts except for the user name. They must
  // have the same empty password, so we can't use $this->drupalCreateUser().
  $edit = [];
  $edit['name'] = $this->randomMachineName();
  $edit['mail'] = $edit['name'] . '@example.com';
  $edit['status'] = 1;
  $user1 = User::create($edit);
  $user1->save();
  $edit['name'] = $this->randomMachineName();
  $user2 = User::create($edit);
  $user2->save();
  // Unique password hashes are automatically generated, the only way to
  // change that is to update it directly in the database.
  Database::getConnection()->update('users_field_data')
    ->fields([
    'pass' => NULL,
  ])
    ->condition('uid', [
    $user1->id(),
    $user2->id(),
  ], 'IN')
    ->execute();
  \Drupal::entityTypeManager()->getStorage('user')
    ->resetCache();
  $user1 = User::load($user1->id());
  $user2 = User::load($user2->id());
  $this->assertEquals($user2->getPassword(), $user1->getPassword(), 'Both users have the same password hash.');
  // The password reset URL must not be valid for the second user when only
  // the user ID is changed in the URL.
  $reset_url = user_pass_reset_url($user1);
  $attack_reset_url = str_replace("user/reset/{$user1->id()}", "user/reset/{$user2->id()}", $reset_url);
  $this->drupalGet($attack_reset_url);
  // Verify that the invalid password reset page does not show the user name.
  $this->assertSession()
    ->pageTextNotContains($user2->getAccountName());
  $this->assertSession()
    ->addressEquals('user/password');
  $this->assertSession()
    ->pageTextContains('You have tried to use a one-time login link that has either been used or is no longer valid. Request a new one using the form below.');
  $this->drupalGet($attack_reset_url . '/login');
  // Verify that the invalid password reset page does not show the user name.
  $this->assertSession()
    ->pageTextNotContains($user2->getAccountName());
  $this->assertSession()
    ->addressEquals('user/password');
  $this->assertSession()
    ->pageTextContains('You have tried to use a one-time login link that has either been used or is no longer valid. Request a new one using the form below.');
}