Skip to main content
← All vulnerabilities
CVE-2023-39952

Advanced permissions not respected when copying entire group folders

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • nextcloud security-advisories

    From 22.0.0 · fixed in 22.2.10.13; From 23.0.0 · fixed in 23.0.12.8; From 24.0.0 · fixed in 24.0.12.4; From 25.0.0 · fixed in 25.0.8; From 26.0.0 · fixed in 26.0.3; From 27.0.0 · fixed in 27.0.1

References 4

GitHub · nextcloud/security-advisories

GitHub · nextcloud/groupfolders

GitHub · nextcloud/server

hackerone.com