A vulnerability classified as problematic has been found in Nextcloud End-to-end Encryption App up to 1.12.3 (Cloud Software). Affected is an unknown function of the component Meta Data File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Nextcloud End-to-end encryption app provides all the necessary APIs to implement End-to-End encryption on the client side. By providing an invalid meta data file, an attacker can make previously dropped files inaccessible. It is recommended that the Nextcloud End-to-end encryption app is upgraded to version 1.12.4 that contains the fix.

The weakness was shared 06/24/2023 as GHSA-x7c7-v5r3-mg37. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-35173 since 06/14/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 1.12.4 eliminates this vulnerability. Applying a patch 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.

Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• End-to-end Encryption App

Version

• 1.12.0
• 1.12.1
• 1.12.2
• 1.12.3

License

• open-source

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CPE 2.2info

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