CVE-2021-41380
CVSS V2 Medium 4.3
CVSS V3 Medium 6.5
Description
** DISPUTED ** RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service (application crash) via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang, until terminated, but no memory leak occurs - the resources are freed once the hung process is terminated and the resource usage is constant during the hang. Only the process that is connected to the fake Server is affected. This is an application bug, not a security issue.
Overview
- CVE ID
- CVE-2021-41380
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-09-17T20:15:07
- Last Modified Date
- 2021-09-28T19:25:29
Weakness Enumerations
CPE Configuration (Product)
CPE | Vulnerable | Operator | Version Start | Version End |
---|---|---|---|---|
cpe:2.3:a:realvnc:vnc_viewer:6.21.406:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
Reference URL | Reference Tags |
---|---|
https://gist.github.com/totaam/a90f2bb40f5b693ccec0ae903d021b03 | Exploit Third Party Advisory |
Sources
Source Name | Source URL |
---|---|
NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-41380 |
MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41380 |
History
Created | Old Value | New Value | Data Type | Notes |
---|---|---|---|---|
2022-05-10 06:53:05 | Added to TrackCVE | |||
2022-12-05 10:51:22 | 2021-09-17T20:15Z | 2021-09-17T20:15:07 | CVE Published Date | updated |
2022-12-05 10:51:22 | 2021-09-28T19:25:29 | CVE Modified Date | updated | |
2022-12-05 10:51:22 | Analyzed | Vulnerability Status | updated |