PT-2021-23505 · Barrier+1 · Barrier+1
Matthias Gerstner
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Published
2021-11-08
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Updated
2024-06-15
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CVE-2021-42073
CVSS v3.1
8.2
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Barrier versions prior to 2.4.0
Description
An issue allows an attacker to enter an active session state with the barriers component by supplying a client label that identifies a valid client configuration. This label is
Unnamed by default but could 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 modify the clipboard content on the server.Recommendations
For versions prior to 2.4.0, update to version 2.4.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the barriers component to minimize the risk of exploitation. Avoid using the default client label
Unnamed and ensure that all client configurations have unique and secure labels.Exploit
Fix
Session Fixation
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Weakness Enumeration
Related Identifiers
Affected Products
Barrier
Suse