Use After Free in VMware Cloud Foundation
CVE-2020-3963
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- VMware Cloud Foundation
- VMware Esxi — versions 6.5, 6.7, 7.0.0
- VMware Fusion — versions 11.x before 11.5.2
- VMware Esxi — versions 7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG, 6.5 before ESXi650-202005401-SG
- VMware Workstation — versions 15.x before 15.5.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.vmware.com/security/advisories/VMSA-2020-0015.html (Vendor Advisory)
- seclists.org/fulldisclosure/2020/Jul/22 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/158459/VMware-ESXi-Use-After-Free-Out-Of-Bounds-A… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-3963?
- CVE-2020-3963 is a medium-severity vulnerability in VMware Cloud Foundation, classified under Use After Free. CVSS score: 5.5/10. Published 2020-06-25.
- How severe is CVE-2020-3963?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-3963 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.