Advisory Details

April 17th, 2019

(Pwn2Own) VMware Workstation UHCI Race Condition Privilege Escalation Vulnerability

ZDI-19-420
ZDI-CAN-8364

CVE ID CVE-2019-5519
CVSS SCORE 7.8, (AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)
AFFECTED VENDORS VMware
AFFECTED PRODUCTS Workstation
VULNERABILITY DETAILS

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

The specific flaw exists within the processing of data sent to UHCI endpoints. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor.

ADDITIONAL DETAILS VMware has issued an update to correct this vulnerability. More details can be found at:
https://www.vmware.com/security/advisories/VMSA-2019-0005.html
DISCLOSURE TIMELINE
  • 2019-03-20 - Vulnerability reported to vendor
  • 2019-04-17 - Coordinated public release of advisory
  • 2019-06-14 - Advisory Updated
CREDIT fluoroacetate (@fluoroacetate)
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