Check Point Advisories

VMware VNC VMWDynResolution Heap Buffer Overflow (CVE-2017-4933)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0492
Date Published:	14 May 2018
Severity:	Medium
Last Updated:	Sunday 03 June, 2018
Source:
Industry Reference:	CVE-2017-4933
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	ESXi Fusion Workstation
Vulnerability Description	A heap buffer overflow vulnerability exists in the VNC component of VMware. The vulnerability is due to an error in processing VMWDynResolution requests.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the VMware VNC VMWDynResolution Heap Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: VMware VNC VMWDynResolution Heap Buffer Overflow