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VMware Security Advisory 2018-0004

VMware Security Advisory 2018-0004
Posted Jan 10, 2018
Authored by VMware | Site vmware.com

VMware Security Advisory 2018-0004 - VMware vSphere, Workstation and Fusion updates add Hypervisor-Assisted Guest remediation for speculative execution issue.

tags | advisory
advisories | CVE-2017-5715
SHA-256 | c6d2e4b063e3ab3f5a8f434842d6b1780e505c1685915b84e2d41b8aa6dce9d1

VMware Security Advisory 2018-0004

Change Mirror Download
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VMware Security Advisory

Advisory ID: VMSA-2018-0004
Severity: Important
Synopsis: VMware vSphere, Workstation and Fusion updates add
Hypervisor-Assisted Guest Remediation for speculative
execution issue
Issue date: 2018-01-09
Updated on: 2018-01-09 (Initial Advisory)
CVE number: 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 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 Running Replace with/ Mitigation
Product Version on Severity Apply patch Workaround
=========== ======= ======= ======== ============= ==========

VC 6.5 Any Important 6.5 U1e * None
VC 6.0 Any Important 6.0 U3d * None
VC 5.5 Any Important 5.5 U3g * None

ESXi 6.5 Any Important ESXi650-201801401-BG None
ESXi650-201801402-BG **
ESXi 6.0 Any Important ESXi600-201801401-BG None
ESXi600-201801402-BG **
ESXi 5.5 Any Important ESXi550-201801401-BG ** None

Workstation 14.x Any Important 14.1.1 None
Workstation 12.x Any Important patch planned None

Fusion 10.x OS X Important 10.1.1 None
Fusion 8.x OS X Important 8.5.10 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.

** These ESXi patches install the microcodes if present for your CPU,
see VMware Knowledge Base article 52085.


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&downloadG
roup=VC65U1E

vCenter Server 6.0 U3d
Downloads and Documentation:

https://my.vmware.com/web/vmware/details?downloadGroup=VC60U3D&productId=49
1&rPId=20946

vCenter Server 5.5 U3g
Downloads and Documentation:

https://my.vmware.com/web/vmware/details?downloadGroup=VC55U3G&productId=35
3&rPId=20876

VMware ESXi 6.5
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/52198
http://kb.vmware.com/kb/52199

VMware ESXi 6.0
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/52205
http://kb.vmware.com/kb/52206

VMware ESXi 5.5
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/52127

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 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


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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, Workstation 14.1.1, and Fusion 10.1.1 and
8.5.10 on 2018-01-09.

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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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