Advisory Details

April 17th, 2019

(Pwn2Own) VMware Workstation UHCI Out-Of-Bounds Access Privilege Escalation Vulnerability

CVE ID	CVE-2019-5518
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. Crafted data sent to UHCI endpoints can trigger a memory access past the end of an allocated data structure. 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	2019-03-21 - Vulnerability reported to vendor 2019-04-17 - Coordinated public release of advisory 2019-06-14 - Advisory Updated
CREDIT	fluoroacetate (@fluoroacetate)

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