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 | 2.4.6 |
| Openldap | Openldap | 2.4.7 | 2.4.7 |
| Openldap | Openldap | 2.4.8 | 2.4.8 |
| Openldap | Openldap | 2.4.9 | 2.4.9 |
| Openldap | Openldap | 2.4.10 | 2.4.10 |
| Openldap | Openldap | 2.4.11 | 2.4.11 |
| Openldap | Openldap | 2.4.12 | 2.4.12 |
| Openldap | Openldap | 2.4.13 | 2.4.13 |
| Openldap | Openldap | 2.4.14 | 2.4.14 |
| Openldap | Openldap | 2.4.15 | 2.4.15 |
| Openldap | Openldap | 2.4.16 | 2.4.16 |
| Openldap | Openldap | 2.4.17 | 2.4.17 |
| Openldap | Openldap | 2.4.18 | 2.4.18 |
| Openldap | Openldap | 2.4.19 | 2.4.19 |
| Openldap | Openldap | 2.4.20 | 2.4.20 |
| Openldap | Openldap | 2.4.21 | 2.4.21 |
| Openldap | Openldap | 2.4.22 | 2.4.22 |
| Openldap | Openldap | 2.4.23 | 2.4.23 |
| Red Hat Enterprise Linux 5 | RedHat | openldap-0:2.3.43-12.el5_6.7 | * |
| Red Hat Enterprise Linux 6 | RedHat | openldap-0:2.4.19-15.el6_0.2 | * |
| Openldap | Ubuntu | devel | * |
| Openldap | Ubuntu | karmic | * |
| Openldap | Ubuntu | lucid | * |
| Openldap | Ubuntu | maverick | * |
| Openldap2.3 | Ubuntu | hardy | * |