#VU26148 Heap overflow in VMware Workstation and VMware Horizon Client - CVE-2020-3951

Vulnerability identifier: #VU26148

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3951

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
VMware Workstation
Client/Desktop applications / Virtualization software
VMware Horizon Client
Client/Desktop applications / Software for system administration

Vendor: VMware, Inc

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within Cortado Thinprint. A local user can trigger heap overflow and crash the Thinprint service running on the system where Workstation or Horizon Client is installed.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 15.5.0 - 15.5.1

VMware Horizon Client: 3.0.0 - 5.3

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External links
https://www.vmware.com/security/advisories/VMSA-2020-0005.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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