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VMware Security Advisory 2018-0012

VMware Security Advisory 2018-0012
Posted May 23, 2018
Authored by VMware | Site vmware.com

VMware Security Advisory 2018-0012 - VMware vSphere, Workstation and Fusion updates enable Hypervisor- Assisted Guest Mitigations for Speculative Store Bypass issue. The mitigations in this advisory are categorized as Hypervisor Assisted Guest Mitigations described by VMware Knowledge Base article 54951. KB54951 also covers CVE-2018-3640 mitigations which do not require VMware product updates.

tags | advisory
advisories | CVE-2018-3639, CVE-2018-3640
MD5 | 090966bf04ad919307fba056e08a2be5

VMware Security Advisory 2018-0012

Change Mirror Download
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VMware Security Advisory

Advisory ID: VMSA-2018-0012
Severity: Moderate
Synopsis: VMware vSphere, Workstation and Fusion updates enable
Hypervisor-Assisted Guest Mitigations for Speculative Store
Bypass issue.
Issue date: 2018-05-21
Updated on: 2018-05-21 (Initial Advisory)
CVE number: CVE-2018-3639

1. Summary

VMware vSphere, Workstation and Fusion updates enable Hypervisor-
Assisted Guest Mitigations for Speculative Store Bypass issue.

The mitigations in this advisory are categorized as Hypervisor
Assisted Guest Mitigations described by VMware Knowledge Base article
54951. KB54951 also covers CVE-2018-3640 mitigations which do not
require VMware product updates.

2. Relevant Products

VMware vCenter Server (VC)
VMware vSphere ESXi (ESXi)
VMware Workstation Pro / Player (Workstation)
VMware Fusion Pro / Fusion (Fusion)

3. Problem Description

vCenter Server, ESXi, Workstation, and Fusion update speculative
execution control mechanism for Virtual Machines (VMs). As a result,
a patched Guest Operating System (GOS) can remediate the Speculative
Store bypass issue (CVE-2018-3639) using the Speculative-Store-
Bypass-Disable (SSBD) control bit. This issue may allow for
information disclosure in applications and/or execution runtimes
which rely on managed code security mechanisms. Based on current
evaluations, we do not believe that CVE-2018-3639 could allow for VM
to VM or Hypervisor to VM Information disclosure.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2018-3639 to this issue.

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 6.7 Any Moderate Patch Pending* None
VC 6.5 Any Moderate Patch Pending* None
VC 6.0 Any Moderate Patch Pending* None
VC 5.5 Any Moderate Patch Pending* None

ESXi 6.7 Any Moderate Patch Pending* None
ESXi 6.5 Any Moderate Patch Pending* None
ESXi 6.0 Any Moderate Patch Pending* None
ESXi 5.5 Any Moderate Patch Pending* None

Workstation 14.x Any Moderate 14.1.2** None

Fusion 10.x Any Moderate 10.1.2** None

*These updates are on hold until Intel has released updated microcode
which has been tested by VMware.

**There are additional VMware and 3rd party requirements for
CVE-2018-3639 mitigation beyond applying these updates. Please see
VMware Knowledge Base Article 55111 for details.

4. Solution

VMware Workstation Pro, Player 14.1.2
Downloads and Documentation:
https://www.vmware.com/go/downloadworkstation
https://www.vmware.com/go/downloadplayer

VMware Fusion Pro / Fusion 10.1.2
Downloads and Documentation:
https://www.vmware.com/go/downloadfusion

5. References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3639
https://kb.vmware.com/kb/54951
https://kb.vmware.com/kb/55111

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6. Change log

2018-05-21: Initial security advisory in conjunction with the release
of Workstation 14.1.2 and Fusion 10.1.2 on 2018-05-21.

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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 at 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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