CVE-2023-28997
Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files
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.
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
Produtos afetados
nextcloud · security-advisoriesQuer saber se a sua infraestrutura está exposta a isto?
Falar com a TrueHacking →Referências
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfhttps://github.com/nextcloud/desktop/pull/5324https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fchttps://lists.debian.org/debian-lts-announce/2025/09/msg00018.html