#VU54312 Improper Authentication in VMware Carbon Black App Control Server - CVE-2021-21998

Vulnerability identifier: #VU54312

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-21998

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VMware Carbon Black App Control Server
Server applications / Server solutions for antivurus protection

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Carbon Black App Control Server: before 8.5.8

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External links
https://www.vmware.com/security/advisories/VMSA-2021-0012.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.