The OpenID module in Drupal 6.x before 6.18, and the OpenID module 5.x before 5.x-1.4 for Drupal, violates the OpenID 2.0 protocol by not verifying the openid.return_to value, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Drupal | Drupal | 6.0 (including) | 6.0 (including) |
| Drupal | Drupal | 6.0-beta1 (including) | 6.0-beta1 (including) |
| Drupal | Drupal | 6.0-beta2 (including) | 6.0-beta2 (including) |
| Drupal | Drupal | 6.0-beta3 (including) | 6.0-beta3 (including) |
| Drupal | Drupal | 6.0-beta4 (including) | 6.0-beta4 (including) |
| Drupal | Drupal | 6.0-dev (including) | 6.0-dev (including) |
| Drupal | Drupal | 6.0-rc1 (including) | 6.0-rc1 (including) |
| Drupal | Drupal | 6.0-rc2 (including) | 6.0-rc2 (including) |
| Drupal | Drupal | 6.0-rc3 (including) | 6.0-rc3 (including) |
| Drupal | Drupal | 6.0-rc4 (including) | 6.0-rc4 (including) |
| Drupal | Drupal | 6.1 (including) | 6.1 (including) |
| Drupal | Drupal | 6.2 (including) | 6.2 (including) |
| Drupal | Drupal | 6.3 (including) | 6.3 (including) |
| Drupal | Drupal | 6.4 (including) | 6.4 (including) |
| Drupal | Drupal | 6.5 (including) | 6.5 (including) |
| Drupal | Drupal | 6.6 (including) | 6.6 (including) |
| Drupal | Drupal | 6.7 (including) | 6.7 (including) |
| Drupal | Drupal | 6.8 (including) | 6.8 (including) |
| Drupal | Drupal | 6.9 (including) | 6.9 (including) |
| Drupal | Drupal | 6.10 (including) | 6.10 (including) |
| Drupal | Drupal | 6.11 (including) | 6.11 (including) |
| Drupal | Drupal | 6.12 (including) | 6.12 (including) |
| Drupal | Drupal | 6.13 (including) | 6.13 (including) |
| Drupal | Drupal | 6.14 (including) | 6.14 (including) |
| Drupal | Drupal | 6.15 (including) | 6.15 (including) |
| Drupal | Drupal | 6.16 (including) | 6.16 (including) |
| Drupal | Drupal | 6.17 (including) | 6.17 (including) |