Improper revalidation of permissions in Nextcloud Server prior to 14.0.0, 13.0.6 and 12.0.11 lead to not accepting access restrictions by acess tokens.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nextcloud_server | Nextcloud | * | 12.0.11 (excluding) |
| Nextcloud_server | Nextcloud | 13.0.0 (including) | 13.0.6 (excluding) |
| Nextcloud_server | Nextcloud | 14.0.0-beta1 (including) | 14.0.0-beta1 (including) |
| Nextcloud_server | Nextcloud | 14.0.0-beta2 (including) | 14.0.0-beta2 (including) |
| Nextcloud_server | Nextcloud | 14.0.0-beta3 (including) | 14.0.0-beta3 (including) |
| Nextcloud_server | Nextcloud | 14.0.0-beta4 (including) | 14.0.0-beta4 (including) |
| Nextcloud_server | Nextcloud | 14.0.0-rc1 (including) | 14.0.0-rc1 (including) |
| Nextcloud_server | Nextcloud | 14.0.0-rc2 (including) | 14.0.0-rc2 (including) |
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: