#VU60620 Resource management error in VMware ESXi - CVE-2021-22050

Vulnerability identifier: #VU60620

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22050

CWE-ID: CWE-399

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within rhttpproxy. A remote attacker can send crafted slow HTTP POST request to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware ESXi: before ESXi70U3c-19193900

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External links
https://www.vmware.com/security/advisories/VMSA-2022-0004.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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