CVE-2023-28834: Full path of data directory exposed to Nextcloud server users
First published: Mon Apr 03 2023(Updated: )
Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. A user was able to get the full data directory path of the Nextcloud server from an API endpoint. By itself this information is not problematic as it can also be guessed for most common setups, but it could speed up other unknown attacks in the future if the information is known. Nextcloud Server 24.0.6 and 25.0.4 and Nextcloud Enterprise Server 23.0.11, 24.0.6, and 25.0.4 contain patches for this issue. There are no known workarounds.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud Server | >=23.0.0<23.0.14 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.10 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.10 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.4 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.4 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this Nextcloud Server vulnerability?
The vulnerability ID is CVE-2023-28834.
What is the severity of CVE-2023-28834?
The severity of CVE-2023-28834 is medium, with a severity value of 4.3.
How does CVE-2023-28834 affect Nextcloud Server?
CVE-2023-28834 affects Nextcloud Server versions 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server versions 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4.
What is the impact of CVE-2023-28834?
CVE-2023-28834 is an information disclosure vulnerability, allowing a user to obtain sensitive information.
How can I fix the CVE-2023-28834 vulnerability?
To fix the CVE-2023-28834 vulnerability, update Nextcloud Server to versions 24.0.7 or 25.0.5, or update Nextcloud Enterprise Server to versions 23.0.12, 24.0.7, or 25.0.5.
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- version/nextcloud nextcloud server/24.0.0
- version/nextcloud nextcloud server/25.0.0