VMSA-2021-0005

Critical

Advisory ID: VMSA-2021-0005

CVSSv3 Range: 9.1

Issue Date: 2021-04-01

Updated On: 2021-04-01 (Initial Advisory)

CVE(s): CVE-2021-21982

Synopsis: VMware Carbon Black Cloud Workload appliance update addresses incorrect URL handling vulnerability (CVE-2021-21982)

1. Impacted Products

VMware Carbon Black Cloud Workload appliance.

2. Introduction

A vulnerability in VMware Carbon Black Cloud Workload appliance was privately reported to VMware. An update is available to remediate this vulnerability in the affected versions of the appliance.

3. Advisory Details

Description

A URL on the administrative interface of the VMware Carbon Black Cloud Workload appliance can be manipulated to bypass authentication. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.1.

Known Attack Vectors

A malicious actor with network access to the administrative interface of the VMware Carbon Black Cloud Workload appliance may be able to obtain a valid authentication token, granting access to the administration API of the appliance. Successful exploitation of this issue would result in the attacker being able to view and alter administrative configuration settings.

Resolution

To remediate CVE-2021-21982 apply the updates listed in the 'Fixed Version' column of the 'Response Matrix' below to affected deployments.

Workarounds

None.

Mitigation

VMware best practices recommend implementing network controls to limit access to the local administrative interface of the appliance. Unrestricted network access to this interface is not required for the regular operation of the product.

Additional Documentation

None.

Notes

None.

Acknowledgements

VMware would like to thank Egor Dimitrenko of Positive Technologies for reporting this issue to us.

Response Matrix

Product	Version	Running On	CVE Identifier	CVSSv3	Severity	Fixed Version	Workarounds	Additional Documentation
VMware Carbon Black Cloud Workload appliance	1.0.1 and prior	Linux	CVE-2021-21982	9.1	critical	1.0.2	None	None