chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openldap | Openldap | 2.4.6 (including) | 2.4.6 (including) |
| Openldap | Openldap | 2.4.7 (including) | 2.4.7 (including) |
| Openldap | Openldap | 2.4.8 (including) | 2.4.8 (including) |
| Openldap | Openldap | 2.4.9 (including) | 2.4.9 (including) |
| Openldap | Openldap | 2.4.10 (including) | 2.4.10 (including) |
| Openldap | Openldap | 2.4.11 (including) | 2.4.11 (including) |
| Openldap | Openldap | 2.4.12 (including) | 2.4.12 (including) |
| Openldap | Openldap | 2.4.13 (including) | 2.4.13 (including) |
| Openldap | Openldap | 2.4.14 (including) | 2.4.14 (including) |
| Openldap | Openldap | 2.4.15 (including) | 2.4.15 (including) |
| Openldap | Openldap | 2.4.16 (including) | 2.4.16 (including) |
| Openldap | Openldap | 2.4.17 (including) | 2.4.17 (including) |
| Openldap | Openldap | 2.4.18 (including) | 2.4.18 (including) |
| Openldap | Openldap | 2.4.19 (including) | 2.4.19 (including) |
| Openldap | Openldap | 2.4.20 (including) | 2.4.20 (including) |
| Openldap | Openldap | 2.4.21 (including) | 2.4.21 (including) |
| Openldap | Openldap | 2.4.22 (including) | 2.4.22 (including) |
| Openldap | Openldap | 2.4.23 (including) | 2.4.23 (including) |