Out-of-bounds write in VMware ESXi - CVE-2022-31705
Published: December 13, 2022 / Updated: January 9, 2023
Vulnerability identifier: #VU70156
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2022-31705
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: VMware, Inc
Affected software:
VMware ESXi
VMware ESXi
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the USB 2.0 controller (EHCI). A local privileged user on the guest OS can trigger an out-of-bounds write and execute arbitrary code as the virtual machine's VMX process running on the host.
How to mitigate CVE-2022-31705
Install updates from vendor's website.
Note, on ESXi the exploitation is contained within the VMX sandbox.