CVE-2021-41380

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
References
Link Resource
https://gist.github.com/totaam/a90f2bb40f5b693ccec0ae903d021b03 Exploit Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:realvnc:vnc_viewer:6.21.406:*:*:*:*:*:*:*

History

07 Nov 2023, 03:38

Type Values Removed Values Added
Summary ** 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. 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

Information

Published : 2021-09-17 20:15

Updated : 2024-08-04 03:15


NVD link : CVE-2021-41380

Mitre link : CVE-2021-41380

CVE.ORG link : CVE-2021-41380


JSON object : View

Products Affected

realvnc

  • vnc_viewer
CWE
CWE-20

Improper Input Validation