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CVE-2019-5512

Status Candidate

Overview

VMware Workstation (15.x before 15.0.3, 14.x before 14.1.6) running on Windows does not handle COM classes appropriately. Successful exploitation of this issue may allow hijacking of COM classes used by the VMX process, on a Windows host, leading to elevation of privilege.

Related Files

VMware Host VMX Process COM Class Hijack Privilege Escalation
Posted Mar 25, 2019
Authored by James Forshaw, Google Security Research

The VMX process (vmware-vmx.exe) process configures and hosts an instance of VM. As is common with desktop virtualization platforms the VM host usually has privileged access into the OS such as mapping physical memory which represents a security risk. To mitigate this the VMX process is created with an elevated integrity level by the authentication daemon (vmware-authd.exe) which runs at SYSTEM. This prevents a non-administrator user opening the process and abusing its elevated access. Unfortunately the process is created as the desktop user which results in the elevated process sharing resources such as COM registrations with the normal user who can modify the registry to force an arbitrary DLL to be loaded into the VMX process. Affects VMware Workstation Windows version 14.1.5 (on Windows 10). Also tested on VMware Player version 15.

tags | exploit, arbitrary, registry
systems | windows
advisories | CVE-2019-5512
SHA-256 | 032bc0791aa032c4cf3fd94b8d7db2846f5bc0d3465f7a023e94a81286eb18ff
VMware Security Advisory 2019-0002
Posted Mar 15, 2019
Authored by VMware | Site vmware.com

VMware Security Advisory 2019-0002 - VMware Workstation update addresses elevation of privilege issues.

tags | advisory
advisories | CVE-2019-5511, CVE-2019-5512
SHA-256 | e76e88071eec3efb2650ac8cc53a45d5647e3662fc94acac92fb925da7e8cf71
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