CVE-2021-32656

Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.
References
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

History

25 Oct 2022, 15:47

Type Values Removed Values Added
References (GENTOO) https://security.gentoo.org/glsa/202208-17 - (GENTOO) https://security.gentoo.org/glsa/202208-17 - Third Party Advisory

11 Aug 2022, 01:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202208-17 -

11 Jun 2021, 15:38

Type Values Removed Values Added
References (MISC) https://hackerone.com/reports/1167853 - (MISC) https://hackerone.com/reports/1167853 - Permissions Required, Third Party Advisory
References (CONFIRM) https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j875-vr2q-h6x6 - (CONFIRM) https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j875-vr2q-h6x6 - Third Party Advisory
CWE CWE-284
CVSS v2 : unknown
v3 : unknown
v2 : 5.0
v3 : 8.6
CPE cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

01 Jun 2021, 22:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-06-01 22:15

Updated : 2023-12-10 13:55


NVD link : CVE-2021-32656

Mitre link : CVE-2021-32656

CVE.ORG link : CVE-2021-32656


JSON object : View

Products Affected

nextcloud

  • nextcloud_server
CWE
CWE-284

Improper Access Control

NVD-CWE-Other