A flaw was found in sssd Group Policy Objects implementation. When the GPO is not readable by SSSD due to a too strict permission settings on the server side, SSSD will allow all authenticated users to login instead of denying access.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Sssd | Fedoraproject | - (including) | - (including) |
| Red Hat Enterprise Linux 7 | RedHat | sssd-0:1.16.4-21.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | sssd-0:2.2.0-19.el8 | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | imgbased-0:1.1.9-0.1.el7ev | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | ovirt-node-ng-0:4.3.5-0.20190717.0.el7ev | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | redhat-release-virtualization-host-0:4.3.5-2.el7ev | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | redhat-virtualization-host-0:4.3.5-20190722.0.el7_7 | * |
| Sssd | Ubuntu | bionic | * |
| Sssd | Ubuntu | cosmic | * |
| Sssd | Ubuntu | disco | * |
| Sssd | Ubuntu | esm-infra/xenial | * |
| Sssd | Ubuntu | trusty | * |
| Sssd | Ubuntu | upstream | * |
| Sssd | Ubuntu | xenial | * |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: