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VMware vSphere 7.0 ESXi Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000027-VMM-000080

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  • Access to the ESXi host must be limited by enabling lockdown mode.

    Enabling lockdown mode disables direct access to an ESXi host, requiring the host to be managed remotely from vCenter Server. This is done to ensure the roles and access controls implemented in vCe...
    Rule Medium Severity
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  • SRG-OS-000480-VMM-002000

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  • The ESXi host must verify the DCUI.Access list.

    Lockdown mode disables direct host access, requiring that administrators manage hosts from vCenter Server. However, if a host becomes isolated from vCenter, the administrator is locked out and can ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

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  • The ESXi host must verify the exception users list for lockdown mode.

    While a host is in lockdown mode (strict or normal), only users on the "Exception Users" list are allowed access. These users do not lose their permissions when the host enters lockdown mode. The...
    Rule Medium Severity
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  • SRG-OS-000032-VMM-000130

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  • SRG-OS-000021-VMM-000050

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  • The ESXi host must enforce the limit of three consecutive invalid logon attempts by a user.

    By limiting the number of failed logon attempts, the risk of unauthorized access via user password guessing, otherwise known as brute forcing, is reduced. Once the configured number of attempts is ...
    Rule Medium Severity
    Show

  • SRG-OS-000329-VMM-001180

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  • The ESXi host must enforce an unlock timeout of 15 minutes after a user account is locked out.

    By enforcing a reasonable unlock timeout after multiple failed logon attempts, the risk of unauthorized access via user password guessing, otherwise known as brute forcing, is reduced. Users must w...
    Rule Medium Severity
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  • SRG-OS-000023-VMM-000060

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  • The ESXi host must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the system via the Direct Console User Interface (DCUI).

    Failure to display the DOD logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources. Satisfies: SRG-OS-000023-VMM-000060, SRG-OS-0...
    Rule Medium Severity
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  • SRG-OS-000023-VMM-000060

    Group
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  • The ESXi host must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the system via Secure Shell (SSH).

    Failure to display the DOD logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources.
    Rule Medium Severity
    Show

  • SRG-OS-000023-VMM-000060

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  • The ESXi host SSH daemon must be configured with the DOD logon banner.

    The warning message reinforces policy awareness during the logon process and facilitates possible legal action against attackers. Alternatively, systems whose ownership should not be obvious should...
    Rule Medium Severity
    Show

  • SRG-OS-000033-VMM-000140

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  • SRG-OS-000107-VMM-000530

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  • The ESXi host Secure Shell (SSH) daemon must ignore ".rhosts" files.

    SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts. SSH can emulate the behavior of the obsolete "rsh" command in allowing users to enable ...
    Rule Medium Severity
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