CVE-2020-3963 Use after free in Fusion
A local attacker in a virtual machine can read privileged physical memory information due to a use-after-free flaw in 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-2020-3963?
CVE-2020-3963 is a medium-severity use after free vulnerability in Vmware Cloud Foundation, published on 25 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM. A malicious actor with local access to a virtual machine may be able to read privileged information contained in physical memory.
Weakness: CWE-416
Which versions are affected by CVE-2020-3963?
It affects 4 products.
Products include Vmware Cloud Foundation, Vmware Esxi, Vmware Fusion, Vmware Workstation.
How do I fix CVE-2020-3963?
No fix has been published for CVE-2020-3963 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-3963 being exploited?
There is no known exploitation of CVE-2020-3963 in the wild and no public exploit code.
Other vulnerabilities in Vmware Cloud Foundation
- CVE-2024-38812 VMware vCenter Server Heap-Based Buffer Overflow
- CVE-2024-37079 Broadcom VMware vCenter Server Out-of-bounds Write
- CVE-2022-22954 VMware Workspace ONE Access and Identity Manager Server-Side Template Injection
- CVE-2021-22005 VMware vCenter Server File Upload
- CVE-2021-21985 VMware vCenter Server Improper Input Validation
Sources
Also known as GHSA-jgx9-22v4-g4h8.