CVE-2023-28834 Full path of data directory exposed to Nextcloud server users
Nextcloud Server users can retrieve the full data directory path via an API endpoint, potentially aiding future attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-28834?
CVE-2023-28834 is a low-severity vulnerability in Nextcloud Nextcloud Server, published on 3 Apr 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-212
Which versions are affected by CVE-2023-28834?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2023-28834?
No fix has been published for CVE-2023-28834 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-28834 being exploited?
There is no known exploitation of CVE-2023-28834 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2021-32802 Preview generation used third-party library not suited for user-generated content in Nextcloud server
- CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server
- CVE-2018-3775 Auth bypass in Nextcloud Server
- CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected
- CVE-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended
Sources
Also known as GHSA-5w64-6c42-rgcv.