CVE-2021-42073 Information

Description

An issue was discovered in Barrier before 2.4.0. An attacker can enter an active session state with the barriers component (aka the server-side implementation of Barrier) simply by supplying a client label that identifies a valid client configuration. This label is �nnamed\ by default but could instead be guessed from hostnames or other publicly available information. In the active session state an attacker can capture input device events from the server and also modify the clipboard content on the server.

CVSS Vector

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

Reference

https://github.com/debauchee/barrier/releases/tag/v2.4.0 http://www.openwall.com/lists/oss-security/2021/11/02/4

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

LOW

Base Score

NONE

Base Severity

8.2