Denial of service in VMware Horizon Client for Windows



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-3991
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 VMware Horizon Client
Client/Desktop applications / Software for system administration

Vendor VMware, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU47736

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 - Improper input validation

Exploit availability: No

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

CPE2.3 External links

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


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.



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