#VU46355 Improper Authentication in vCenter Server - CVE-2020-3976

Vulnerability identifier: #VU46355

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3976

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
vCenter Server
Server applications / Virtualization software

Vendor: VMware, Inc

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

VMware ESXi and vCenter Server contain a partial denial of service vulnerability in their respective authentication services. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.

Mitigation
Install update from vendor's website.

Vulnerable software versions

vCenter Server: 6.5 - 7.0.0

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External links
https://www.vmware.com/security/advisories/VMSA-2020-0018.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.