Vulnerability identifier: #VU70156

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-31705

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
VMware ESXi
Operating systems & Components / Operating system

Vendor: VMware, Inc

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.

Mitigation

Install updates from vendor's website.

Note, on ESXi the exploitation is contained within the VMX sandbox.

Vulnerable software versions

VMware ESXi: 8.0 - ESXi70U3sf-20036586

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External links
http://www.vmware.com/security/advisories/VMSA-2022-0033.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.