Description
VMware ESXi (6.5 before ESXi650-201710401-BG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a heap overflow via a specific set of VNC packets resulting in heap corruption. Successful exploitation of this issue could result in remote code execution in a virtual machine via the authenticated VNC session. Note: In order for exploitation to be possible in ESXi, VNC must be manually enabled in a virtual machine's .vmx configuration file. In addition, ESXi must be configured to allow VNC traffic through the built-in firewall.
References (3)
Core 3
Core References
Issue Tracking, Vendor Advisory x_refsource_confirm
https://www.vmware.com/security/advisories/VMSA-2017-0021.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1040025
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1040024
Scores
CVSS v3
8.8
EPSS
0.0708
EPSS Percentile
91.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (8)
vmware/esxi
6.5 (30 CPE variants)
VMware/ESXi
6.5 before ESXi650-201710401-BG
vmware/fusion
8.0.0 - 8.5.9
VMware/Fusion
8.x before 8.5.9
VMware/Workstation
12.x before 12.5.8
vmware/workstation_pro
14.0
vmware/workstation_pro
14.1.0
vmware/workstation_pro
12.0.0 - 12.5.8
Published
Dec 20, 2017
Tracked Since
Feb 18, 2026