Time-of-check Time-of-use (TOCTOU) Race Condition in VMware, Inc products - CVE-2020-3957
Published: May 29, 2020 / Updated: March 7, 2021
Vulnerability identifier: #VU28338
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2020-3957
CWE-ID:
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vendor: VMware, Inc
Affected software:
VMware Fusion
VMRC
VMware Horizon Client
VMware Fusion
VMRC
VMware Horizon Client
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a Time-of-check Time-of-use (TOCTOU) issue in the service opener. An local user can gain elevated privileges on the target system.
How to mitigate CVE-2020-3957
Install updates from vendor's website.