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Category:   Application (Generic)  >   VMware Vendors:   VMware
VMware Workstation and Fusion Use-After-Free and Integer Overflow Lets Local Users on a Guest System Gain Elevated Privileges on the Host System
SecurityTracker Alert ID:  1040161
SecurityTracker URL:  http://securitytracker.com/id/1040161
CVE Reference:   CVE-2017-4949, CVE-2017-4950   (Links to External Site)
Date:  Jan 11 2018
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Workstation 12.x, 14.x; Fusion 8.x, 10.x
Description:   Two vulnerabilities were reported in VMware Workstation and Fusion. A local user on the guest system can gain elevated privileges on the host system.

A local user on the guest system can trigger a use-after-free memory error in the VMware NAT service to execute arbitrary code on the host system [CVE-2017-4949]. Systems with IPv6 mode enabled are affected.

A local user on the guest system can trigger an integer overflow in the VMware NAT service to execute arbitrary code on the host system [CVE-2017-4950]. Systems with IPv6 mode enabled are affected.

WenQunWang of Tencent's Xuanwu LAB reported these vulnerabilities.

Impact:   A local user on the guest system can gain elevated privileges on the host system.
Solution:   VMware has issued a fix (8.5.10, 10.1.1, 12.5.9, 14.1.1).

The VMware advisory is available at:

http://www.vmware.com/security/advisories/VMSA-2018-0005.html

Vendor URL:  www.vmware.com/security/advisories/VMSA-2018-0005.html (Links to External Site)
Cause:   Access control error, Boundary error

Message History:   None.


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