Nextcloud office/richdocuments is an office suit for the nextcloud server platform. In affected versions the Collabora integration can be tricked to provide access to any file without proper permission validation. As a result any user with access to Collabora can obtain the content of other users files. It is recommended that the Nextcloud Office App (Collabora Integration) is updated to 7.0.2 (Nextcloud 25), 6.3.2 (Nextcloud 24), 5.0.10 (Nextcloud 23), 4.2.9 (Nextcloud 21-22), or 3.8.7 (Nextcloud 15-20). There are no known workarounds for this issue.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Richdocuments | Nextcloud | * | 3.8.7 (excluding) |
| Richdocuments | Nextcloud | 4.0.0 (including) | 4.2.9 (excluding) |
| Richdocuments | Nextcloud | 5.0.0 (including) | 5.0.10 (excluding) |
| Richdocuments | Nextcloud | 6.0.0 (including) | 6.3.2 (excluding) |
| Richdocuments | Nextcloud | 7.0.0 (including) | 7.0.2 (excluding) |
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: