Buffer overflow in VMware Cloud Foundation
CVE-2020-3968
VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain an out-of-bounds write vulnerability in the USB 3.0 controller (xHCI). A malicious actor with local administrative privileges on a virtual machine may be able to exploit this issue to crash the virtual machine's vmx process leading to a denial of service condition or execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- VMware Cloud Foundation
- VMware Esxi — versions 6.5, 6.7, 7.0.0
- VMware Fusion — versions 11.x before 11.5.5
- VMware Esxi — versions 7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG, 6.5 before ESXi650-202005401-SG
- VMware Workstation — versions 15.x before 15.5.5
Weakness classification (CWE)
References
- www.vmware.com/security/advisories/VMSA-2020-0015.html (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-781/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-3968?
- CVE-2020-3968 is a high-severity vulnerability in VMware Cloud Foundation, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2020-06-25.
- How severe is CVE-2020-3968?
- High severity. CVSS v3 base score is 8.2 out of 10.