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Category:   Application (Generic)  >   VMware Vendors:   VMware
VMware Workstation, Fusion, and View 'VMCI.SYS' Driver Flaw Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1028100
SecurityTracker URL:
CVE Reference:   CVE-2013-1406   (Links to External Site)
Date:  Feb 8 2013
Impact:   Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Workstation 8.x prior to 8.0.5, Workstation 9.0; Fusion 4.x prior to 4.1.4 and 5.x prior to 5.0.2; View 4.x prior to 4.6.2, 5.x prior to 5.1.2
Description:   A vulnerability was reported in VMware Workstation, Fusion, and View. A local user can obtain elevated privileges on the target host and guest system.

A local user can exploit a memory allocation flaw in the 'VMCI.SYS' Virtual Machine Communication Interface (VMCI) driver to gain elevated privileges on the guest and host operating systems.

Windows-based guest and host systems are affected.

Derek Soeder of Cylance, Inc. and Kostya Kortchinsky of Microsoft separately reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target host and guest system.
Solution:   The vendor has issued a fix (Workstation 8.0.5, 9.0.1; Fusion 4.1.4, 5.0.2; View 4.6.2, 5.1.2).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents

Subject:  [Security-announce] NEW - VMSA-2013-0002 VMware ESX, Workstation, Fusion, and View VMCI privilege

Hash: SHA1

- -----------------------------------------------------------------------
                   VMware Security Advisory

Advisory ID: VMSA-2013-0002
Synopsis: VMware ESX, Workstation, Fusion, and View VMCI privilege
escalation vulnerability
Issue date:  2013-02-07
Updated on:  2013-02-07 (initial advisory)
CVE numbers: CVE-2013-1406

- -----------------------------------------------------------------------

1. Summary

   VMware ESX, Workstation, Fusion, and View address a vulnerability in
   the VMCI.SYS driver which could result in a privilege escalation
   on Windows-based hosts and on Windows-based Guest Operating Systems.

2. Relevant releases

   VMware Workstation 9.0
   VMware Workstation 8.x prior to version 8.0.5

   VMware Fusion 5.x prior to version 5.0.2
   VMware Fusion 4.x prior to version 4.1.4

   VMware View 5.x prior to version 5.1.2
   VMware View 4.x prior to version 4.6.2

   VMware ESXi 5.1 without ESXi510-201212102-SG 
   VMware ESXi 5.0 without ESXi500-201212102-SG 
   VMware ESXi 4.1.without ESXi410-201211402-BG 
   VMware ESXi 4.0 without ESXi400-201302402-SG 

   VMware ESX 4.1.without ESX410-201211401-SG 
   VMware ESX 4.0 without ESX400-201302401-SG 

3. Problem Description

   a. VMware VMCI privilege escalation

      VMware ESX, Workstation, Fusion, and View contain a vulnerability
      in the handling of control code in vmci.sys. A local malicious
      user may exploit this vulnerability to manipulate the memory
      allocation through the Virtual Machine Communication Interface
      (VMCI) code. This could result in a privilege escalation on
      Windows-based hosts and on Windows-based Guest Operating Systems

      VMware would like to thank Derek Soeder of Cylance, Inc. and
      Kostya Kortchinsky of Microsoft for independently reporting this 
      issue to us. 

      The Common Vulnerabilities and Exposures project (
      has assigned the names CVE-2013-1406 to this issue.

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

        VMware          Product   Running   Replace with/
        Product         Version   on        Apply Patch*
        =============   =======   =======   =================
        Workstation     9.x       Windows   9.0.1
        Workstation     8.x       Windows   8.0.5

        Fusion          5.0       Mac OS/X  5.0.2
        Fusion          4.1       Mac OS/X  4.1.4
        View            5.x       Windows   5.1.2
        View            4.x       Windows   4.6.2

        ESXi            5.1       ESXi      ESXi510-201212102-SG
        ESXi            5.0       ESXi      ESXi500-201212102-SG
        ESXi            4.1       ESXi      ESXi410-201211402-BG
        ESXi            4.0       ESXi      ESXi400-201302402-SG
        ESXi            3.5       ESXi      not affected

        ESX             4.1       ESX       ESX410-201211401-SG
        ESX             4.0       ESX       ESX400-201302401-SG
        ESX             3.5       ESX       not affected

      * Notes on updating VMware Guest Tools: 

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

4. Solution

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

   VMware Workstation 9.0.1 
   File: VMware-workstation-full-9.0.1-894247.exe

   VMware Workstation 8.0.5 
   File: VMware-workstation-full-8.0.5-893925.exe

   VMware Fusion 5.0.2 
   File: VMware-Fusion-5.0.2-900491.dmg

   VMware Fusion 4.1.4
   File: VMware-Fusion-4.1.4-900582-light.dmg

   View 5.1.2 

   Release Notes 

   VMware View Connection Server (32-bit) 

   VMware View Connection Server (64-bit) 

   View 4.6.2 
   Release Notes 

   VMware View Connection Server (32-bit) 

   VMware View Connection Server (64-bit) 

   ESXi and ESX

   ESXi 5.1
   md5sum: 81d562c00942973f13520afac4868748 
   sha1sum: ec1ff6d3e3c9b127252ba1b710c74119f1164786
   ESXi510-201212001 contains ESXi510-201212102-SG

   ESXi 5.0 
   md5sum: ab8f7f258932a39f7d3e7877787fd198 
   sha1sum: b65bacab4e38cf144e223cff4770501b5bd23334 contains ESXi500-201212102-SG

   ESXi 4.1
   md5sum: f7da5cd52d3c314abc31fe7aef4e50d3
   sha1sum: a4d2232723717d896ff3b0879b0bdb3db823c0a1
   ESXi410-201211001 contains ESXi410-201211402-BG

   ESXi 4.0
   md5sum: 8fca17ca97669dd1d34c34902e8e7ddf
   sha1sum: 51d76922eb7116810622acdd611f3029237a5680
   ESXi400-201302001 contains ESXi400-201302402-SG

   ESX 4.1
   md5sum: c167bccc388661e329fc494df13855c3 
   sha1sum: a8766b2eff68813a262d21a6a6ebeaae62e58c98
   ESX410-201211001 contains ESX410-201211401-SG

   ESX 4.0
   md5sum: 5ca4276e97c19b832d778e17e5f4ba64
   sha1sum: 8d73cf062d8b23bd23f9b85d23f97f2888e4612f
   ESX400-201302001 contains ESX400-201302401-SG

5. References


6. Change log

   2013-02-07 VMSA-2013-0002
   Initial security advisory in conjunction with the release of
   ESX 4.0 patches on 2013-02-07


7. Contact

   E-mail list for product security notifications and announcements:

   This Security Advisory is posted to the following lists:

   * security-announce at
   * bugtraq at
   * full-disclosure at

   E-mail: security at
   PGP key at:

   VMware Security Advisories

   VMware security response policy

   General support life cycle policy

   VMware Infrastructure support life cycle policy

   Copyright 2013 VMware Inc. All rights reserved.

Version: PGP Desktop 10.2.0 (Build 2599)
Charset: utf-8

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