#VU56798 Resource exhaustion in vCenter Server - CVE-2021-22009

Vulnerability identifier: #VU56798

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-2021-22009

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
vCenter Server
Server applications / Virtualization software

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the VAPI (vCenter API) service. A remote attacker can send specially crafted HTTP request to port 443/TCP and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

vCenter Server: 6.5 U1 - 7.0.0

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External links
https://www.vmware.com/security/advisories/VMSA-2021-0020.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.