Improper authentication exists in < 12.3.2, < 12.2.6, and < 12.1.12 for GitLab Community Edition (CE) and Enterprise Edition (EE) in the GitLab SAML integration had a validation issue that permitted an attacker to takeover another users account.
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 |
|---|---|---|---|
| Gitlab | Gitlab | 12.1.0 (including) | 12.1.12 (excluding) |
| Gitlab | Gitlab | 12.2.0 (including) | 12.2.6 (excluding) |
| Gitlab | Gitlab | 12.3.0 (including) | 12.3.2 (excluding) |
| Gitlab | Ubuntu | esm-apps/xenial | * |
| Gitlab | Ubuntu | upstream | * |
| Gitlab | Ubuntu | xenial | * |