Vulnerability · Published Feb 13, 2023 · Assigned by GitHub_M
CVE-2023-25159Nextcloud Server previews are accessible without a watermark
Low 2.3
In plain English
A low-severity improper access control in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Official description
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Office is a document collaboration app for the same platform. Nextcloud Server 24.0.x prior to 24.0.8 and 25.0.x prior to 25.0.1, Nextcloud Enterprise Server 24.0.x prior to 24.0.8 and 25.0.x prior to 25.0.1, and Nextcloud Office (Richdocuments) App 6.x prior to 6.3.1 and 7.x prior to 7.0.1 have previews accessible without a watermark. The download should be hidden and the watermark should get applied. This issue is fixed in Nextcloud Server 25.0.1 and 24.0.8, Nextcloud Enterprise Server 25.0.1 and 24.0.8, and Nextcloud Office (Richdocuments) App 7.0.1 (for 25) and 6.3.1 (for 24). No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 24.0.4, < 24.0.8= 25.0.0>= 6.0.0, < 6.3.1= 7.0.0 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-92g2-h5jv-jjmg x_refsource_CONFIRM
- https://github.com/nextcloud/richdocuments/pull/2579 x_refsource_MISC
- https://github.com/nextcloud/server/pull/34799 x_refsource_MISC
- https://hackerone.com/reports/1745755 x_refsource_MISC