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CVE-2024-52523 Nextcloud Server Custom defined credentials of external storages are sent back to the frontend

Medium 4.6 Published Updated

Attackers with active session access can read plain-text external storage credentials returned by the API.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2024-52523?

CVE-2024-52523 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 15 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Nextcloud Server is a self hosted personal cloud system. After setting up a user or administrator defined external storage with fixed credentials, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active session of a user. It is recommended that the Nextcloud Server is upgraded to 28.0.12, 29.0.9 or 30.0.2 and Nextcloud Enterprise Server is upgraded to 25.0.13.14, 26.0.13.10, 27.1.11.10, 28.0.12, 29.0.9 or 30.0.2.

Weakness: CWE-125, CWE-200

Which versions are affected by CVE-2024-52523?

It affects 1 product.

Products include Nextcloud Nextcloud Server.

How do I fix CVE-2024-52523?

No fix has been published for CVE-2024-52523 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-52523 being exploited?

There is no known exploitation of CVE-2024-52523 in the wild and no public exploit code.

All Nextcloud Nextcloud Server vulnerabilities

Sources

Also known as GHSA-42w6-r45m-9w9j.

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