#VU22409 Time-of-check Time-of-use (TOCTOU) Race Condition in VMware, Inc products - CVE-2019-5519

Vulnerability identifier: #VU22409

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-5519

CWE-ID: N/A

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
VMware Fusion
Client/Desktop applications / Virtualization software
VMware Workstation
Client/Desktop applications / Virtualization software
VMware ESXi
Operating systems & Components / Operating system

Vendor: VMware, Inc

Description
The vulnerability allows a local attacker to execute arbitrary code on the target system.

The vulnerabity exists due to the Time-of-check Time-of-use (TOCTOU) vulnerability in the virtual USB 1.1 UHCI (Universal Host Controller Interface). An attacker with physical access to a virtual machine with a virtual USB controller present can execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Fusion: 10.0 - 11.0.2

VMware Workstation: 14.0 - 15.0.3

VMware ESXi: 6.0 - 6.7

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External links
https://www.vmware.com/security/advisories/VMSA-2019-0005.html

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.