CVE-2023-28645

MEDIUM

Nextcloud richdocuments <8.0.0-beta.1-6.3.2 - Auth Bypass

Title source: llm

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.

References (3)

Core 3

Core References

Mitigation, Vendor Advisory x_refsource_confirm

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-95j6-p5cj-5hh5

Patch, Vendor Advisory x_refsource_misc

https://github.com/nextcloud/richdocuments/pull/2604

Product x_refsource_misc

https://docs.nextcloud.com/server/latest/admin_manual/office/configuration.html#wopi-settings

Scores

CVSS v3 5.7

EPSS 0.0020

EPSS Percentile 42.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-284

Status published

Products (1)

nextcloud/richdocuments 6.0.0 - 6.3.2

Published Mar 31, 2023

Tracked Since Feb 18, 2026