Riskcovery

CVE-2021-32655

Files Drop public link can be added as federated share

State
Published
Severity
3.5 Low
Published
Jun 1, 2021
Updated
Aug 3, 2024
Reserved
May 12, 2021

Read the record on cve.org

Description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.

Scores

CVSSScoreVectorSource
3.13.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:NGitHub_M

Weaknesses

  • CWE-241 Improper Handling of Unexpected Data Type

Affected Products

ProductVersions
security-advisoriesnextcloud
  • < 19.0.11Affected
  • >= 20.0.0, < 20.0.10Affected
  • >= 21.0.0, < 21.0.2Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.