#VU9356 Out-of-bounds write in VMware Workstation and VMware Horizon - CVE-2017-4935

Vulnerability identifier: #VU9356

Vulnerability risk: Low

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-4935

CWE-ID: CWE-787

Exploitation vector: Local network

Exploit availability: No

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

Vendor: VMware, Inc

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

The weakness exists due to out-of-bounds memory write error in JPEG2000 parser in the TPView.dll. An adjacent attacker can trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.

Mitigation
Update Workstation to version 12.5.8.
Update Horizon View Client for Windows to version 4.6.1.

Vulnerable software versions

VMware Workstation: 12.0.0 - 12.5.7

VMware Horizon: 4.0, 4.5.0

---

External links
https://www.vmware.com/security/advisories/VMSA-2017-0018.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.