Advisory Details

September 15th, 2017

VMware Workstation Shader Out-Of-Bounds Write Privilege Escalation Vulnerability

ZDI-17-738
ZDI-CAN-4857

CVE ID CVE-2017-4924
CVSS SCORE 6.2, (AV:L/AC:H/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS VMware
AFFECTED PRODUCTS VMware Workstation
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of VMware Workstation. An attacker must first obtain the ability to execute low-privileged code on the guest system in order to exploit this vulnerability.

The specific flaw exists within the Shader implementation. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the host OS.

ADDITIONAL DETAILS VMware has issued an update to correct this vulnerability. More details can be found at:
https://www.vmware.com/security/advisories/VMSA-2017-0015.html
DISCLOSURE TIMELINE
  • 2017-06-22 - Vulnerability reported to vendor
  • 2017-09-15 - Coordinated public release of advisory
CREDIT Nico Golde and Ralf-Philipp Weinmann
Comsecuris UG (haftungsbeschraenkt)
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