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VMSA-2018-0005

VMware Workstation, and Fusion updates resolve use-after - free and integer-overflow vulnerabilities

VMware Security Advisory

VMware Security Advisory Advisory ID:

VMSA-2018-0005

VMware Security Advisory Severity:

Critical

VMware Security Advisory Synopsis:

VMware Workstation, and Fusion updates resolve use-after-free and integer-overflow vulnerabilities

VMware Security Advisory Issue date:

2018-01-10

VMware Security Advisory Updated on:

2018-01-10 (Initial Advisory)

VMware Security Advisory CVE numbers:

CVE-2017-4949, CVE-2017-4950

1. Summary

VMware Workstation, and Fusion updates resolve use-after-free and integer-overflow vulnerabilities

2. Relevant Products

VMware Workstation Pro / Player (Workstation)
VMware Fusion Pro / Fusion (Fusion)

3. Problem Description

a. Use-after-free vulnerability in VMware NAT service

VMware Workstation and Fusion contain a use-after-free vulnerability in VMware NAT service when IPv6 mode is enabled. This issue may allow a guest to execute code on the host.

Note: IPv6 mode for VMNAT is not enabled by default.

VMware would like to thank WenQunWang of Tencent's Xuanwu LAB for reporting this issue to us.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4949 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

Product Version

Running on

Severity

Replace with/ Apply Patch

Mitigation/ Workaround

VMware ProductWorkstation

Product Version14.x

Running on Any

SeverityCritical

Replace with/ Apply Patch14.1.1

Mitigation/ WorkaroundNone

VMware ProductWorkstation

Product Version12.x

Running on Any

SeverityCritical

Replace with/ Apply Patch12.5.9

Mitigation/ WorkaroundNone

VMware ProductFusion

Product Version10.x

Running on OS X

SeverityCritical

Replace with/ Apply Patch10.1.1

Mitigation/ WorkaroundNone

VMware ProductFusion

Product Version8.x

Running on OS X

SeverityCritical

Replace with/ Apply Patch8.5.10

Mitigation/ WorkaroundNone

b. Integer-overflow vulnerability in VMware NAT service

VMware Workstation and Fusion contain an integer overflow vulnerability in VMware NAT service when IPv6 mode is enabled. This issue may lead to an out-of-bound read which can then be used to execute code on the host in conjunction with other issues.

Note: IPv6 mode for VMNAT is not enabled by default.

VMware would like to thank WenQunWang of Tencent's Xuanwu LAB for reporting this issue to us.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4950 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.