#VU47736 Input validation error in VMware Horizon Client - CVE-2020-3991

Vulnerability identifier: #VU47736

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3991

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable 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 file system access control issue during install timet. A local user can overwrite certain admin privileged files through a symbolic link attack at install time and cause a denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Horizon Client: 5.0 - 5.4.4

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External links
https://www.vmware.com/security/advisories/VMSA-2020-0022.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.