CVE-2021-22895 Information

Description

Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the \Register with a Provider\ flow.

CVSS Vector

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

Reference

https://github.com/nextcloud/desktop/releases/tag/v3.1.3 https://hackerone.com/reports/903424 https://github.com/nextcloud/desktop/pull/2926 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5 https://www.debian.org/security/2021/dsa-4974

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9