[Security-announce] NEW VMSA-2018-0004 VMware vSphere, Workstation and Fusion updates add Hypervisor-Assisted Guest Remediation for speculative execution issue

VMware Security Announcements security-announce at lists.vmware.com
Tue Jan 9 09:32:46 PST 2018


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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

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   This Security Advisory is posted to the following lists:

     security-announce at lists.vmware.com
     bugtraq at securityfocus.com
     fulldisclosure at seclists.org

   E-mail: security at vmware.com
   PGP key at: https://kb.vmware.com/kb/1055

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

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

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

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   https://twitter.com/VMwareSRC

   Copyright 2018 VMware Inc.  All rights reserved.

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