CVE-2023-28645
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.
Does this matter?
Lower severity and a low EPSS score (0.74%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.74% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- nextcloud/richdocuments
- Source
- security-advisories@github.com
References
- https://docs.nextcloud.com/server/latest/admin_manual/office/configuration.html#wopi-settingsProduct
- https://github.com/nextcloud/richdocuments/pull/2604Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-95j6-p5cj-5hh5Mitigation, Vendor Advisory
- https://docs.nextcloud.com/server/latest/admin_manual/office/configuration.html#wopi-settingsProduct
- https://github.com/nextcloud/richdocuments/pull/2604Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-95j6-p5cj-5hh5Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.