CVE-2023-28645 — MEDIUM (5.7)

Q: How severe is CVE-2023-28645?

CVE-2023-28645 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2023-28645?

Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Richdocuments.

Vulnerability 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 Score

5.7

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Nextcloud	Richdocuments	>= 6.0.0, < 6.3.2

Related Weaknesses (CWE)

CWE-284

References

https://docs.nextcloud.com/server/latest/admin_manual/office/configuration.html#Product
https://github.com/nextcloud/richdocuments/pull/2604PatchVendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-95j6-pMitigationVendor Advisory
https://docs.nextcloud.com/server/latest/admin_manual/office/configuration.html#Product
https://github.com/nextcloud/richdocuments/pull/2604PatchVendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-95j6-pMitigationVendor Advisory

FAQ

What is CVE-2023-28645?

CVE-2023-28645 is a vulnerability with a CVSS score of 5.7 (MEDIUM). 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 int...

How severe is CVE-2023-28645?

CVE-2023-28645 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-28645?

Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Richdocuments.