CVE-2021-32654 Information

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 receive write/read privileges on any Federated File Share. Since public links can be added as federated file share this can also be exploited on any public link. Users can upgrade to patched versions (19.0.11 20.0.10 or 21.0.2) or as a workaround disable federated file sharing.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Reference

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 https://hackerone.com/reports/1170024

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

9.1