Multiple vulnerabilities in VMware ESXi, Workstation, and Fusion

Published: 2018-11-09

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-6981 CVE-2018-6982
CWE-ID	CWE-121
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	VMware ESXi Operating systems & Components / Operating system VMware Workstation Client/Desktop applications / Virtualization software VMware Fusion Client/Desktop applications / Virtualization software
Vendor	VMware, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU15786

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6981

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to execute arbitrary code on the target system.

The weakness exists due to uninitialized stack memory usage in the vmxnet3 virtual network adapter. A remote attacker can trigger memory corruption if vmxnet3 is enabled and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

VMware ESXi: 6.0 - 6.7

VMware Workstation: 14.0 - 15.0.0

VMware Fusion: 10.0 - 11.0.0

External links

http://www.vmware.com/security/advisories/VMSA-2018-0027.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Stack-based buffer overflow

EUVDB-ID: #VU15787