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Reusing a Nonce, Key Pair in Encryption


Severity Medium
Score 6.5/10


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 recover and modify the contents of end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.

  • LOW
  • HIGH
  • NONE
  • HIGH
  • HIGH
  • NONE

CWE-323 - Reusing a Nonce, Key Pair in Encryption

Nonces should be used for the present occasion and only once.


Advisory Timeline

  • Published