A vulnerability, which was classified as problematic, was found in Nextcloud Server 16.0.1 (Cloud Software). Affected is an unknown code of the component Lookup Server Handler. The manipulation with an unknown input leads to a exposure of private personal information to an unauthorized actor vulnerability. CWE is classifying the issue as CWE-359. The product does not properly prevent a person's private, personal information from being accessed by actors who either (1) are not explicitly authorized to access the information or (2) do not have the implicit consent of the person about whom the information is collected. This is going to have an impact on confidentiality. CVE summarizes:

Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled.

The weakness was shared 02/04/2020. This vulnerability is traded as CVE-2019-15623 since 08/26/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1589.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries 149665, 149662 and 149660 are related to this item.

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• Cloud Software

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• Nextcloud Server

Version

• 16.0.1

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• open-source

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