VMware Security Advisory 2018-0004.1 - VMware vSphere, Workstation and Fusion updates add Hypervisor- Assisted Guest remediation for speculative execution issue.
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VMware Security Advisory
Advisory ID: VMSA-2018-0004.1
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: 2018-01-10
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 12.5.9 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
&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:
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 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
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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.
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.
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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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