Out-of-bounds write in VMware ESXi - CVE-2020-3982
Published: October 20, 2020 / Updated: December 14, 2022
Vulnerability identifier: #VU47749
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-3982
CWE-ID: CWE-787
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 compromise vulnerable system.
The vulnerability exists due to a boundary error caused by 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 the guest OS can run a specially crafted program to trigger a heap-based buffer overflow and crash the system or execute arbitrary code on the hypervisor.
Remediation
Install updates from vendor's website.