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AUSCERT External Security Bulletin Redistribution
ESB-2021.3869
VMware Tanzu Application Service for VMs updates address a
denial-of-service vulnerability (CVE-2021-22101)
12 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: VMware Tanzu Application Service for VMs
Publisher: VMware
Operating System: VMware ESX Server
Virtualisation
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-22101
Original Bulletin:
https://www.vmware.com/security/advisories/VMSA-2021-0026.html
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VMware Tanzu Application Service for VMs updates address a denial-of-service
vulnerability (CVE-2021-22101)
Advisory ID: VMSA-2021-0026
CVSSv3 Range: 7.5
Issue Date: 2021-11-11
Updated On: 2021-11-11 (Initial Advisory)
CVE(s): CVE-2021-22101
Synopsis:
VMware Tanzu Application Service for VMs updates address a denial-of-service
vulnerability (CVE-2021-22101)
1. Impacted Products
VMware Tanzu Application Service for VMs
2. Introduction
A denial-of-service vulnerability in one of the components of VMware Tanzu
Application Service for VMs was observed. Patches and workarounds are available
to remediate or workaround this vulnerability in affected VMware products.
3a. VMware Tanzu Application service for VMs updates address a denial-of-service
vulnerability (CVE-2021-22101)
Description
VMware Tanzu Application Service for VMs uses Cloud Controller (CAPI) from Cloud
Foundry which is vulnerable to an unauthenticated denial-of-service(DoS)
vulnerability. VMware has evaluated this issue to be 'Important' severity with a
maximum CVSSv3 base score of 7.5.
Known Attack Vectors
A remote attacker can leverage this vulnerability to cause denial of service by
using REST HTTP requests and generating an enormous SQL query leading to database
(ccdb) unavailability.
Resolution
To remediate CVE-2021-22101, apply the patches listed in the 'Fixed Version'
column of the 'Resolution Matrix' found below.
Workarounds
None.
Additional Documentation
None.
Notes
None.
Acknowledgements
Response Matrix
Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version Workarounds Additional Documentation
VMware Tanzu Application Service for VMs 2.12.x Any CVE-2021-22101 7.5 Important 2.12.1 None None
VMware Tanzu Application Service for VMs 2.11.x Any CVE-2021-22101 7.5 Important 2.11.8 None None
VMware Tanzu Application Service for VMs 2.10.x Any CVE-2021-22101 7.5 Important 2.10.20 None None
VMware Tanzu Application Service for VMs 2.9.x Any CVE-2021-22101 7.5 Important 2.9.28 None None
VMware Tanzu Application Service for VMs 2.7.x Any CVE-2021-22101 7.5 Important 2.7.40 None None
4. References
Fixed Version(s) and Release Notes:
VMware Tanzu Application Service for VMs ( 2.12.1)
https://network.pivotal.io/products/elastic-runtime#/releases/977821
https://docs.pivotal.io/application-service/2-12/release-notes/runtime-rn.html
VMware Tanzu Application Service for VMs ( 2.11.8)
https://network.pivotal.io/products/elastic-runtime#/releases/976752
https://docs.pivotal.io/application-service/2-11/release-notes/runtime-rn.html
VMware Tanzu Application Service for VMs ( 2.10.20)
https://network.pivotal.io/products/elastic-runtime#/releases/979089
https://docs.pivotal.io/application-service/2-10/release-notes/runtime-rn.html
VMware Tanzu Application Service for VMs ( 2.9.28)
https://network.pivotal.io/products/elastic-runtime#/releases/978786
https://docs.pivotal.io/application-service/2-9/release-notes/runtime-rn.html
VMware Tanzu Application Service for VMs ( 2.7.40)
https://network.pivotal.io/products/elastic-runtime#/releases/978504
https://docs.pivotal.io/application-service/2-7/release-notes/runtime-rn.html
Additional Documentation:
https://www.cloudfoundry.org/blog/cve-2021-22101-cloud-controller-is-vulnerable-to-unauthenticated-denial-of-service/
Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2021-22101
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:N/I:N/A:H
5. Change Log
11/11/2021: VMSA-2021-0026: Initial security advisory.
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