CVE-2020-3959 Denial of service in VMware ESXi
A local attacker can crash the virtual machine process via a memory leak in the VMCI module, causing a partial denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3959?
CVE-2020-3959 is a low-severity denial of service vulnerability in Vmware Esxi, published on 29 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
VMware ESXi (6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), VMware Workstation (15.x before 15.1.0) and VMware Fusion (11.x before 11.1.0) contain a memory leak vulnerability in the VMCI module. A malicious actor with local non-administrative access to a virtual machine may be able to crash the virtual machine's vmx process leading to a partial denial of service.
Weakness: CWE-401
Which versions are affected by CVE-2020-3959?
It affects 3 products.
Products include Vmware Esxi, Vmware Fusion, Vmware Workstation.
How do I fix CVE-2020-3959?
No fix has been published for CVE-2020-3959 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-2020-3959 being exploited?
There is no known exploitation of CVE-2020-3959 in the wild and no public exploit code.
Other vulnerabilities in Vmware Esxi
Sources
Also known as GHSA-h8p9-vqgm-6wpx.