#VU59182 Heap-based buffer overflow in VMware ESXi - CVE-2021-22045

Vulnerability identifier: #VU59182

Vulnerability risk: High

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22045

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VMware ESXi
Operating systems & Components / Operating system

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker with access to the guest OS with D-ROM device emulation can trigger heap-based buffer overflow and execute arbitrary code on the hypervisor.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware ESXi: ESXi650-201903001 - ESXi670-202103101-SG

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External links
https://www.vmware.com/security/advisories/VMSA-2022-0001.html
https://www.zerodayinitiative.com/advisories/ZDI-22-003/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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