CVE-2018-6981 Memory corruption in VMware ESXi, VMware Workstation, and VMware Fusion
A guest VM can execute arbitrary code on the host due to uninitialized stack memory in the vmxnet3 adapter, affecting VMware virtualization products.
- 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-2018-6981?
CVE-2018-6981 is a high-severity memory corruption vulnerability in Vmware Esxi, published on 4 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
VMware ESXi 6.7 without ESXi670-201811401-BG and VMware ESXi 6.5 without ESXi650-201811301-BG, VMware ESXi 6.0 without ESXi600-201811401-BG, VMware Workstation 15, VMware Workstation 14.1.3 or below, VMware Fusion 11, VMware Fusion 10.1.3 or below contain uninitialized stack memory usage in the vmxnet3 virtual network adapter which may allow a guest to execute code on the host.
Weakness: CWE-908
Which versions are affected by CVE-2018-6981?
It affects 3 products.
Products include Vmware Esxi, Vmware Fusion, Vmware Workstation.
How do I fix CVE-2018-6981?
No fix has been published for CVE-2018-6981 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-6981 being exploited?
There is no known exploitation of CVE-2018-6981 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Vmware Esxi
Sources
Also known as GHSA-gg2h-7m29-p3rh.