VMSA-2018-0004.2

VMware vSphere, Workstation and Fusion updates add Hypervisor-Assisted Guest Remediation for speculative execution issue

VMware Security Advisory
 
VMware Security Advisory Advisory ID:
  VMSA-2018-0004.2
VMware Security Advisory Severity:
  Important
VMware Security Advisory Synopsis:
  VMware vSphere, Workstation and Fusion updates add Hypervisor-Assisted Guest Remediation for speculative execution issue.
VMware Security Advisory Issue date:
  2018-01-09
VMware Security Advisory Updated on:
  2018-01-12
VMware Security Advisory CVE numbers:
  CVE-2017-5715
 
1. Summary

VMware vSphere, Workstation and Fusion updates add Hypervisor- Assisted Guest Remediation for speculative execution issue.


Notes:

Hypervisor remediation can be classified into the two following categories:
   - Hypervisor-Specific Remediation (documented in VMSA-2018-0002)
   - Hypervisor-Assisted Guest Remediation (documented in this advisory)


The ESXi patches and new versions of Workstation and Fusion of this advisory include the Hypervisor-Specific Remediation documented in VMware Security Advisory VMSA-2018-0002.


More information on the types of Hypervisor remediation may be found in VMware Knowledge Base article 52245.

 

2. Relevant Products
  • VMware vCenter Server (VC)
  • VMware vSphere ESXi (ESXi)
  • VMware Workstation Pro / Player (Workstation)
  • VMware Fusion Pro / Fusion (Fusion)   
3. Problem Description

New speculative-execution control mechanism for Virtual Machines
 

Updates of vCenter Server, ESXi, Workstation and Fusion virtualize the new speculative-execution control mechanism for Virtual Machines (VMs). As a result, a patched Guest Operating System (Guest OS) can remediate the Branch Target Injection issue (CVE-2017-5715). This issue may allow for information disclosure between processes within the VM.


To remediate CVE-2017-5715 in the Guest OS the following VMware and third party requirements must be met:
 

VMware Requirements

  • Deploy the updated version of vCenter Server listed in the table (if vCenter Server is used).
  • Deploy the ESXi patches and/or the new versions for Workstation or Fusion listed in the table.
  • Ensure that your VMs are using Hardware Version 9 or higher. For best performance, Hardware Version 11 or higher is recommended. VMware Knowledge Base article 1010675 discusses Hardware Versions.

Third party Requirements

  • Deploy the Guest OS patches for CVE-2017-5715. These patches are to be obtained from your OS vendor.
  • Update the CPU microcode. Additional microcode is needed for your CPU to be able to expose the new MSRs that are used by the patched Guest OS. This microcode should be available from your hardware platform vendor.
    VMware is providing several versions of the required microcode from INTEL and AMD through ESXi patches listed in the table. See VMware Knowledge Base 52085 for more details.

Column 5 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
Severity
Replace with/ Apply Patch
Mitigation/ Workaround
VMware Product VC
Product Version 6.5
Running on Any
Severity Important
Replace with/ Apply Patch 6.5 U1e*
Mitigation/ Workaround None
VMware Product VC
Product Version 6.0
Running on Any
Severity Important
Replace with/ Apply Patch 6.0 U3d*
Mitigation/ Workaround None
VMware Product VC
Product Version 5.5
Running on Any
Severity Important
Replace with/ Apply Patch 5.5 U3g*
Mitigation/ Workaround None
VMware Product ESXi**
Product Version 6.5
Running on Any
Severity Important
Replace with/ Apply Patch KB52345
Mitigation/ Workaround None
VMware Product ESXi**
Product Version 6.0
Running on Any
Severity Important
Replace with/ Apply Patch KB52345
Mitigation/ Workaround None
VMware Product ESXi**
Product Version 5.5
Running on Any
Severity Important
Replace with/ Apply Patch KB52345
Mitigation/ Workaround None
VMware Product Workstation
Product Version 14.x
Running on Any
Severity Important
Replace with/ Apply Patch 14.1.1
Mitigation/ Workaround None
VMware Product Workstation
Product Version 12.x
Running on Any
Severity Important
Replace with/ Apply Patch 12.5.9
Mitigation/ Workaround None
VMware Product Fusion
Product Version 10.x
Running on OS X
Severity Important
Replace with/ Apply Patch 10.1.1
Mitigation/ Workaround None
VMware Product Fusion
Product Version 8.x
Running on OS X
Severity Important
Replace with/ Apply Patch 8.5.10
Mitigation/ Workaround None

 

* The new versions of vCenter Server set restrictions on ESXi hosts joining an Enhanced vMotion Cluster, see VMware Knowledge Base article 52085 for details.

 
** Please see KB article 52345 for important information on these patches.

 

 

4. Solution

 

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

 

vCenter Server 6.5 U1e
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?productId=614&rPId=20950&downloadGroup=VC65U1E

 

vCenter Server 6.0 U3d
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?downloadGroup=VC60U3D&productId=491&rPId=20946

 

vCenter Server 5.5 U3g
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?downloadGroup=VC55U3G&productId=353&rPId=20876

 

VMware ESXi 6.5
Downloads and Documentation:
https://kb.vmware.com/s/article/52345

 

VMware ESXi 6.0
Downloads and Documentation:  
https://kb.vmware.com/s/article/52345

 

VMware ESXi 5.5
Downloads and Documentation:
https://kb.vmware.com/s/article/52345

 

VMware Workstation Pro, Player 14.1.1

Downloads and Documentation:
https://www.vmware.com/go/downloadworkstation

https://www.vmware.com/go/downloadplayer
https://www.vmware.com/support/pubs/ws_pubs.html

 

VMware Workstation Pro, Player 12.5.9
Downloads and Documentation:
https://my.vmware.com/web/vmware/info/slug/desktop_end_user_computing/vmware_workstation_pro/12_0

https://my.vmware.com/en/web/vmware/free#desktop_end_user_computing/vmware_workstation_player/12_0
https://www.vmware.com/support/pubs/ws_pubs.html

 

VMware Fusion Pro / Fusion 8.5.10, 10.1.1
Downloads and Documentation:  
https://www.vmware.com/go/downloadfusion  
https://www.vmware.com/support/pubs/fusion_pubs.html

 

5. References
 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715

VMware Knowledge Base Article 52085
https://kb.vmware.com/s/article/52085

VMware Knowledge Base Article 1010675
https://kb.vmware.com/s/article/1010675

VMware Knowledge Base article 52245
https://kb.vmware.com/s/article/52245

VMware Knowledge Base article 52245
https://kb.vmware.com/s/article/52345

 

6. Change log

 

2018-01-09 VMSA-2018-0004
Initial security advisory in conjunction with the release of VMware vCenter Server 5.5 U3g, 6.0 U3d and 6.5 U1e, ESXi 5.5, 6.0, and 6.5 patches and Workstation 14.1.1, and Fusion 10.1.1 and 8.5.10 on 2018-01-09.

 

2018-01-10 VMSA-2018-0004.1

Updated security advisory to add Workstation 12.x version i.e. 12.5.9 which addresses CVE-2017-5715.

2018-01-12 VMSA-2018-0004.2 Updated security advisory to add KB article 52345.

 

7. Contact

 

E-mail list for product security notifications and announcements:

http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce

 

This Security Advisory is posted to the following lists:

  security-announce@lists.vmware.com

  bugtraq@securityfocus.com

  fulldisclosure@seclists.org

 

E-mail: security@vmware.com

PGP key at:

https://kb.vmware.com/kb/1055

 

VMware Security Advisories

http://www.vmware.com/security/advisories

 

VMware Security Response Policy

https://www.vmware.com/support/policies/security_response.html

 

VMware Lifecycle Support Phases

https://www.vmware.com/support/policies/lifecycle.html

 

VMware Security & Compliance Blog  

https://blogs.vmware.com/security

 

Twitter

https://twitter.com/VMwareSRC

 

Copyright 2018 VMware Inc. All rights reserved.

 

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