Nextcloud Server up to 28.0.11/29.0.8/30.0.1 information disclosure

Summaryinfo

A vulnerability was found in Nextcloud Server up to 28.0.11/29.0.8/30.0.1. It has been declared as problematic. The impacted element is an unknown function. The manipulation results in information disclosure. This vulnerability was named CVE-2024-52523. An attack on the physical device is feasible. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Nextcloud Server up to 28.0.11/29.0.8/30.0.1. Affected is some unknown processing. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-52523 since 11/11/2024. The exploitability is told to be difficult. The attack needs to be approached locally. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 28.0.12, 29.0.9 or 30.0.2 eliminates this vulnerability. Applying the patch 8a13f284765bd4606984e7d925c32ae6e82b8a27 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• Server

Version

• 28.0.0
• 28.0.1
• 28.0.2
• 28.0.3
• 28.0.4
• 28.0.5
• 28.0.6
• 28.0.7
• 28.0.8
• 28.0.9
• 28.0.10
• 28.0.11
• 29.0.0
• 29.0.1
• 29.0.2
• 29.0.3
• 29.0.4
• 29.0.5
• 29.0.6
• 29.0.7
• 29.0.8
• 30.0.0
• 30.0.1

License

• open-source

Website

• Product: https://github.com/nextcloud/server/

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