CVE-2023-48303 Nextcloud Server admins can change authentication details of user configured external storage
Administrators can modify authentication details for user-configured external storage, potentially compromising user data access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-48303?
CVE-2023-48303 is a low-severity missing authorization vulnerability in Nextcloud Nextcloud Server, published on 21 Nov 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and Nextcloud Enterprise Server, admins can change authentication details of user configured external storage. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. No known workarounds are available.
Weakness: CWE-284
Which versions are affected by CVE-2023-48303?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2023-48303?
No fix has been published for CVE-2023-48303 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-48303 being exploited?
There is no known exploitation of CVE-2023-48303 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-2448-44rp-c7hh.