CVE-2020-3995 Denial of service in VMware ESXi, Workstation, Fusion

Medium 5.3 Published 20 Oct 2020 Updated 4 Aug 2024

A malicious actor with VM access can trigger a memory leak in VMware hypervisors, causing resource exhaustion and denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3995?

CVE-2020-3995 is a medium-severity denial of service vulnerability in Vmware Cloud Foundation, published on 20 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In VMware ESXi (6.7 before ESXi670-201908101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x before 15.1.0), Fusion (11.x before 11.1.0), the VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigger a memory leak issue resulting in memory resource exhaustion on the hypervisor if the attack is sustained for extended periods of time.

Weakness: CWE-401

Which versions are affected by CVE-2020-3995?

It affects 4 products.

Products include Vmware Cloud Foundation, Vmware Esxi, Vmware Fusion, Vmware Workstation.

How do I fix CVE-2020-3995?

No fix has been published for CVE-2020-3995 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-3995 being exploited?

There is no known exploitation of CVE-2020-3995 in the wild and no public exploit code.

All Vmware Cloud Foundation vulnerabilities

Sources

Also known as GHSA-rw87-jqj5-q35f.