CVE-2023-28645: Secure view can be bypassed by using internal API endpoint in Nextcloud richdocuments
Nextcloud richdocuments is a Nextcloud app integrating the office suit Collabora Online. In affected versions the secure view feature of the rich documents app can be bypassed by using unprotected internal API endpoint of the rich documents app. It is recommended that the Nextcloud Office app (richdocuments) is upgraded to 8.0.0-beta.1, 7.0.2 or 6.3.2. Users unable to upgrade may mitigate the issue by taking steps to restrict the ability to download documents. This includes ensuring that the WOPI configuration is configured to only serve documents between Nextcloud and Collabora. It is highly recommended to define the list of Collabora server IPs as the allow list within the Office admin settings of Nextcloud.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability CVE-2023-28645?
The vulnerability CVE-2023-28645 is a bypass of the secure view feature in the Nextcloud richdocuments app.
What is the severity of CVE-2023-28645?
The severity of CVE-2023-28645 is medium.
How does the vulnerability CVE-2023-28645 affect Nextcloud Richdocuments?
The vulnerability CVE-2023-28645 affects Nextcloud Richdocuments versions 6.0.0 to 6.3.2 and 7.0.0 to 7.0.2.
How can I fix the vulnerability CVE-2023-28645?
To fix the vulnerability CVE-2023-28645, it is recommended to update to a version of Nextcloud Richdocuments that is not affected by the vulnerability.
Where can I find more information about the vulnerability CVE-2023-28645?
More information about the vulnerability CVE-2023-28645 can be found in the Nextcloud documentation and the Nextcloud security advisories.