#VU29297 Out-of-bounds write in VMware, Inc products - CVE-2020-3968

Vulnerability identifier: #VU29297

Vulnerability risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3968

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
VMware ESXi
Operating systems & Components / Operating system
VMware Fusion
Client/Desktop applications / Virtualization software
VMware Workstation
Client/Desktop applications / Virtualization software
Cloud Foundation
Client/Desktop applications / Virtualization software

Vendor: VMware, Inc

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing untrusted input in xHCI controller. A local attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware ESXi: 6.5 - 7.0

VMware Fusion: 11.0.0 - 11.5.3

VMware Workstation: 15.0.0 - 15.5.2

Cloud Foundation: 3.0 - 4.0

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External links
https://www.zerodayinitiative.com/advisories/ZDI-20-781/
https://www.vmware.com/security/advisories/VMSA-2020-0015.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.