CVE-2017-4933

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 7.42% Top 10%
Vendor Advisory vmware.com
Affected: VMware ESXi
Affected: VMware Workstation
Affected: VMware Fusion
Published at:
Updated at:

References

Link Tags
https://www.vmware.com/security/advisories/VMSA-2017-0021.html issue tracking vendor advisory
http://www.securitytracker.com/id/1040025 vdb entry third party advisory
http://www.securitytracker.com/id/1040024 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-4933?
CVE-2017-4933 has been scored as a high severity vulnerability.
How to fix CVE-2017-4933?
To fix CVE-2017-4933, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-4933 being actively exploited in the wild?
It is possible that CVE-2017-4933 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-4933?
CVE-2017-4933 affects VMware ESXi, VMware Workstation, VMware Fusion.
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