VMware Security Advisory: VMSA-2014-0005

This patch addresses a potential guest privilege escalation caused by an issue in VMware tools installed on Microsoft Windows 8.1, so not really much of an issues as you can count the number of people using windows 8.1 on the fingers of one hand. Smile But seriously if you are using Windows 8.1 in  your environment as a VM then seriously consider this update.

Advisory ID: VMSA-2014-0005
Synopsis: VMware Workstation, Player, Fusion, and ESXi patches address a guest privilege escalation
Issue date: 2014-05-29
Updated on: 2014-05-29 (initial advisory)
CVE numbers: CVE-2014-3793


VMware Workstation, Player, Fusion, and ESXi patches address a vulnerability in VMware Tools which could result in a privilege escalation on Microsoft Windows 8.1.

Relevant Releases

  • VMware Workstation 10.x prior to version 10.0.
  • VMware Player 6.x prior to version 6.0.2
  • VMware Fusion 6.x prior to version 6.0.3
  • ESXi 5.5 without patch ESXi550-201403102-SG
  • ESXi 5.1 without patch ESXi510-201404102-SG
  • ESXi 5.0 without patch ESXi500-201405102-SG

Problem Description

A: – Guest privilege escalation in VMware Tools.  A kernel NULL dereference vulnerability was found in VMware Tools running on Microsoft Windows 8.1. Successful exploitation of this issue could lead to an escalation of privilege in the guest operating system.

VMware would like to thank Tavis Ormandy from the Google Security Team for reporting this issue to us.  The vulnerability does not allow for privilege escalation from the Guest Operating System to the host. This means that host memory can not be manipulated from the Guest Operating System.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2014-3793 to this issue.

Column 4 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product Product Version Running On Replace with/Apply Patch*
Workstation 10.x 10.x any 10.0.2 or later
Workstation 9.x 9.x any Not affected **
Player 6.x any 6.0.2 or later
Player 5.x any Not affected **
Fusion 6.x OSX 6.0.3 or later
Fusion 5.x OSX Not affected **
ESXi 5.5 ESXi ESXi550-201403102-SG
ESXi 5.1 ESXi ESXi510-201404102-SG
ESXi 5.0 ESXi ESXi500-201405102-SG

* After the update or patch is applied, VMware Guest Tools must be updated in any pre-existing Windows 8.1 Guest Operating System followed by a reboot of the guest system.

** Workstation 9.x, Player 5.x and Fusion 5.x do not support Windows 8.1 Guest Operating Systems


Please review the patch/release notes for your product and version and verify the checksum of your downloaded file.



Change Log

2014-05-29 VMSA-2014-0005:- Initial security advisory in conjunction with the release of ESXi 5.0 patches on 2014-05-29


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