#VU60616 Use-after-free in VMware ESXi - CVE-2021-22040
Published: February 15, 2022
Vulnerability identifier: #VU60616
Vulnerability risk: Medium
CVSSv4.0: 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:U/U:Green
CVE-ID: CVE-2021-22040
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
VMware ESXi
VMware ESXi
Software vendor:
VMware, Inc
VMware, Inc
Description
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to a use-after-free error in the XHCI USB controller. A remote user with administrative permissions on the guest OS can trigger a use-after-free error and execute arbitrary code as the virtual machine's VMX process running on the host.
Successful exploitation of the vulnerability may allow an attacker to compromise the hypervisor.
Remediation
Install updates from vendor's website.