CVE Catalog

CVE-2017-4941

High
Published: Translated: NVD NIST

Summary

VMware ESXi, Workstation, and Fusion contain a vulnerability that could allow a stack overflow in an authenticated VNC session via a specific set of VNC packets. Successful exploitation of this issue could result in remote code execution in a virtual machine.

Risk Assessment

Exploitation of this vulnerability could allow an attacker to remotely take control of a virtual machine, posing a serious security threat to the organization.

Recommendation

It is recommended to disable VNC in the virtual machine configuration and to configure the firewall to block VNC traffic if it is not necessary.

Related vulnerabilities

Original NVD description (English source)

VMware ESXi (6.0 before ESXi600-201711101-SG, 5.5 ESXi550-201709101-SG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a stack overflow via a specific set of VNC packets. Successful exploitation of this issue could result in remote code execution in a virtual machine via the authenticated VNC session. Note: In order for exploitation to be possible in ESXi, VNC must be manually enabled in a virtual machine's .vmx configuration file. In addition, ESXi must be configured to allow VNC traffic through the built-in firewall.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS