CVE-2021-42073
CVSS V2 Medium 5.8
CVSS V3 High 8.2
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 "Unnamed" 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.
Overview
- CVE ID
- CVE-2021-42073
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-11-08T04:15:08
- Last Modified Date
- 2021-11-09T21:55:19
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:barrier_project:barrier:*:*:*:*:*:*:*:* | 1 | OR | 2.4.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 8.2
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 4.2
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/debauchee/barrier/releases/tag/v2.4.0 | Release Notes Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/11/02/4 | Exploit Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-42073 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42073 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:47:44 | Added to TrackCVE | |||
| 2022-12-05 14:00:51 | 2021-11-08T04:15Z | 2021-11-08T04:15:08 | CVE Published Date | updated |
| 2022-12-05 14:00:51 | 2021-11-09T21:55:19 | CVE Modified Date | updated | |
| 2022-12-05 14:00:51 | Analyzed | Vulnerability Status | updated |