VMSA-2021-0005:VMware Carbon Black Cloud Workload appliance update addresses incorrect URL handling vulnerability
23591
30 March 2021
30 March 2021
CLOSED
CRITICAL
9.1
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 | critical | 1.0.2 | None | None |
4. References
Fixed Version(s) and/or Release Notes
https://docs.vmware.com/en/VMware-Carbon-Black-Cloud-Workload/1.0/rn/cbc-workload-102-release-notes.html
Mitre CVE Dictionary Links
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21982
FIRST CVSSv3 Calculator
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5. Change Log
2021-04-01 VMSA-2021-0005
Initial security advisory.
6. Contact
E-mail list for product security notifications and announcements:
https://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce
This Security Advisory is posted to the following lists:
E-mail: [email protected]
PGP key at:
VMware Security Advisories
https://www.vmware.com/security/advisories
VMware Security Response Policy
https://www.vmware.com/support/policies/security_response.html
VMware Lifecycle Support Phases
https://www.vmware.com/support/policies/lifecycle.html
VMware Security & Compliance Blog
https://blogs.vmware.com/security
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