#VU6309 Buffer overflow in VMware Horizon and VMware Workstation - CVE-2017-4912

Vulnerability identifier: #VU6309

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-4912

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VMware Horizon
Server applications / Virtualization software
VMware Workstation
Client/Desktop applications / Virtualization software

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when parsing TrueType Font (TTF)  fonts in TPView.dll in VMware Workstation and Horizon View Client. A remote attacker can trigger out-of-bounds read/write and execute arbitrary code on security gateway.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
The vulnerability is fixed in VMware Workstation 12.5.3, Horizon View 7.1.0 and 6.2.4.

Vulnerable software versions

VMware Horizon: 6.2 - 6.2.3, 7.0 - 7.0.3

VMware Workstation: 12.5 - 12.5.2

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External links
https://www.vmware.com/security/advisories/VMSA-2017-0008.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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