Vulnerability CVE-2023-28998
Published: 2023-04-04

Description:
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files.? Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.

Type:

CWE-325

 (Missing Required Cryptographic Step)

 References:
https://github.com/nextcloud/desktop/pull/5323
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr
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