#VU54215 Input validation error in VMware Tools - CVE-2021-21997

Vulnerability identifier: #VU54215

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-21997

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
VMware Tools
Client/Desktop applications / Other client software

Vendor: VMware, Inc

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the VM3DMP driver. A local unprivileged user on the guest operating system can trigger panic in the VM3DMP and perform a denial of service (DoS) attack against the guest operating system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Tools: 9.0.0 - 11.2.6

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External links
https://www.vmware.com/security/advisories/VMSA-2021-0011.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.