#VU47748 Out-of-bounds read in VMware ESXi - CVE-2020-3981
Published: October 20, 2020 / Updated: December 14, 2022
Vulnerability identifier: #VU47748
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3981
CWE-ID: CWE-125
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
VMware ESXi
VMware ESXi
Software vendor:
VMware, Inc
VMware, Inc
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition due to a time-of-check time-of-use issue in ACPI device within the implementation of the BDOOR_CMD_PATCH_ACPI_TABLES command. A remote administrator on a guest OS can run a specially crafted program to read memory from the vmx process.
Remediation
Install updates from vendor's website.