CVE-2021-32656

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-32656
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32656.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-32656
Aliases
  • GHSA-j875-vr2q-h6x6
Published
2021-06-01T22:15:08Z
Modified
2024-06-06T13:47:36.492934Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

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

Affected packages

Git / github.com/nextcloud/server

Affected ranges

Type
GIT
Repo
https://github.com/nextcloud/server
Events

Affected versions

v21.*

v21.0.0
v21.0.1
v21.0.1RC1
v21.0.2RC1