VMSA-2023-0016

• VMware Tanzu Application Service for VMs
• Isolation Segment

VMware Tanzu Application Service for VMs and Isolation Segment contain an information disclosure which was privately reported to VMware. Patches are available to remediate this vulnerability in affected VMware products.

The VMware Tanzu Application Service for VMs and Isolation Segment contain an information disclosure vulnerability due to the logging of credentials in hex encoding in platform system audit logs .VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 6.5.

A malicious non-admin user who has access to the platform system audit logs can access hex encoded CF API admin credentials and can push new malicious versions of an application. In a default deployment non-admin users do not have access to the platform system audit logs.

To remediate CVE-2023-20891, apply the patches listed in the ‘Fixed Version’ column of the ‘Resolution Matrix’ found below. 

None.

None.

All the impacted users of Vmware Tanzu Application Service for VMs and Isolation Segment are recommended to do CF API admin credential rotation as per our KB here.

Fixed Version(s) and Release Notes:

VMware Tanzu Application Service for VMs ( 4.0.5)

https://network.pivotal.io/products/elastic-runtime#/releases/1342404

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/4.0/tas-for-vms/runtime-rn.html

VMware Tanzu Application Service for VMs ( 3.0.14)

https://network.pivotal.io/products/elastic-runtime#/releases/1342398

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/3.0/tas-for-vms/runtime-rn.html

VMware Tanzu Application Service for VMs ( 2.13.24)

https://network.pivotal.io/products/elastic-runtime#/releases/1342401

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/2.13/tas-for-vms/runtime-rn.html

VMware Tanzu Application Service for VMs ( 2.11.42)

https://network.pivotal.io/products/elastic-runtime#/releases/1342399

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/2.11/tas-for-vms/runtime-rn.html

Isolation Segment (4.0.4)

https://network.pivotal.io/products/p-isolation-segment#/releases/1326013

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/4.0/tas-for-vms/segment-rn.html

Isolation Segment (3.0.13)

https://network.pivotal.io/products/p-isolation-segment#/releases/1326008

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/3.0/tas-for-vms/segment-rn.html

Isolation Segment (2.13.20)

https://network.pivotal.io/products/p-isolation-segment#/releases/1326016

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/2.13/tas-for-vms/segment-rn.html

Isolation Segment (2.11.35)

https://network.pivotal.io/products/p-isolation-segment#/releases/1325965

https://docs.vmware.com/en/VMware-Tanzu-Application-Service/2.11/tas-for-vms/segment-rn.html

25 Jul 2023 : VMSA-2023-0016
Initial security advisory.

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