Advisory Published


First published: Wed Feb 16 2022(Updated: )

VMware ESXi contains an unauthorized access vulnerability due to VMX having access to settingsd authorization tickets. A malicious actor with privileges within the VMX process only, may be able to access settingsd service running as a high privileged user.

Credit: security@vmware.com

Affected SoftwareAffected VersionHow to fix
VMware Cloud Foundation>=4.0<4.4
VMware ESXi=7.0-update_1
VMware ESXi=7.0-update_2
VMware ESXi=7.0-update_3

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Frequently Asked Questions

  • What is the vulnerability ID for this unauthorized access vulnerability in VMware ESXi?

    The vulnerability ID for this unauthorized access vulnerability in VMware ESXi is CVE-2021-22042.

  • What is the severity of CVE-2021-22042?

    The severity of CVE-2021-22042 is high with a score of 7.8.

  • Which software versions are affected by this vulnerability?

    The vulnerability affects VMware Cloud Foundation versions 4.0 to 4.4, and VMware ESXi versions 7.0 update 1 to update 3.

  • How does this vulnerability allow unauthorized access?

    The vulnerability allows unauthorized access because the VMX process in VMware ESXi has access to settingsd authorization tickets, which can be exploited by a malicious actor with privileges within the VMX process.

  • Is there a fix available for CVE-2021-22042?

    Yes, VMware has released a security advisory (VMSA-2022-0004) which provides details on the fix for CVE-2021-22042.


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