CVE-2023-28833
2.4 · LOWOverview
CVE-2023-28833 is a low-severity vulnerability affecting nextcloud nextcloud_server. It was published on March 30, 2023 and has a CVSS 3.1 base score of 2.4 (LOW).
This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from nextcloud. Update nextcloud_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nextcloud | nextcloud_server | >= 23.0.0, < 23.0.14 | Affected |
Frequently Asked Questions
What is CVE-2023-28833?
CVE-2023-28833 is a low-severity vulnerability affecting nextcloud nextcloud_server. It was published on March 30, 2023 and has a CVSS 3.1 base score of 2.4 (LOW).
How severe is CVE-2023-28833?
This vulnerability has a CVSS 3.1 base score of 2.4, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-28833?
Check the references section for vendor advisories and patches from nextcloud. Update nextcloud_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-28833?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-28833 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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