Vulnerability Description
Nextcloud server is an open source home cloud implementation. In affected versions admins of a server were able to upload a logo or a favicon and to provided a file name which was not restricted and could overwrite files in the appdata directory. Administrators may have access to overwrite these files by other means but this method could be exploited by tricking an admin into uploading a maliciously named file. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should avoid ingesting logo files from untrusted sources.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | >= 23.0.0, < 23.0.14 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ch7f-pVendor Advisory
- https://github.com/nextcloud/server/pull/36095Issue TrackingPatch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ch7f-pVendor Advisory
- https://github.com/nextcloud/server/pull/36095Issue TrackingPatch
FAQ
What is CVE-2023-28833?
CVE-2023-28833 is a vulnerability with a CVSS score of 2.4 (LOW). Nextcloud server is an open source home cloud implementation. In affected versions admins of a server were able to upload a logo or a favicon and to provided a file name which was not restricted and c...
How severe is CVE-2023-28833?
CVE-2023-28833 has been rated LOW with a CVSS base score of 2.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-28833?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.