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VMware vSphere 8.0 ESXi Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must verify certificates for SSL syslog endpoints.

    &lt;VulnDiscussion&gt;When sending syslog data to a remote host, ESXi can be configured to use any combination of TCP, UDP, and SSL transports. Whe...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must enable volatile key destruction.

    &lt;VulnDiscussion&gt;By default, pages allocated for virtual machines (VMs), userspace applications, and kernel threads are zeroed out at allocati...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must configure a session timeout for the vSphere API.

    &lt;VulnDiscussion&gt;The vSphere API (VIM) allows for remote, programmatic administration of the ESXi host. Authenticated API sessions are no diff...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must be configured with an appropriate maximum password age.

    &lt;VulnDiscussion&gt;The older an ESXi local account password is, the larger the opportunity window is for attackers to guess, crack or reuse a pr...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi Common Information Model (CIM) service must be disabled.

    &lt;VulnDiscussion&gt;The CIM system provides an interface that enables hardware-level management from remote applications via a set of standard ap...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must use DOD-approved certificates.

    &lt;VulnDiscussion&gt;The default self-signed host certificate issued by the VMware Certificate Authority (VMCA) must be replaced with a DOD-approv...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host Secure Shell (SSH) daemon must disable port forwarding.

    &lt;VulnDiscussion&gt;While enabling Transmission Control Protocol (TCP) tunnels is a valuable function of sshd, this feature is not appropriate fo...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host OpenSLP service must be disabled.

    &lt;VulnDiscussion&gt;OpenSLP implements the Service Location Protocol to help CIM clients discover CIM servers over TCP 427. This service is not w...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must enable audit logging.

    &lt;VulnDiscussion&gt;ESXi offers both local and remote audit recordkeeping to meet the requirements of the NIAP Virtualization Protection Profile ...
    Rule Medium Severity
    Show

  • SRG-OS-000342-VMM-001230

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must off-load audit records via syslog.

    &lt;VulnDiscussion&gt;ESXi offers both local and remote audit recordkeeping to meet the requirements of the NIAP Virtualization Protection Profile ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must enable strict x509 verification for SSL syslog endpoints.

    &lt;VulnDiscussion&gt;When sending syslog data to a remote host via SSL, the ESXi host is presented with the endpoint's SSL server certificate. In ...
    Rule Medium Severity
    Show

  • SRG-OS-000037-VMM-000150

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must forward audit records containing information to establish what type of events occurred.

    &lt;VulnDiscussion&gt;Without establishing what types of events occurred, it would be difficult to establish, correlate, and investigate the events...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must not be configured to override virtual machine (VM) configurations.

    &lt;VulnDiscussion&gt;Each VM on an ESXi host runs in its own "vmx" process. Upon creation, a vmx process will look in two locations for configurat...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must not be configured to override virtual machine (VM) logger settings.

    &lt;VulnDiscussion&gt;Each VM on an ESXi host runs in its own "vmx" process. Upon creation, a vmx process will look in two locations for configurat...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must require TPM-based configuration encryption.

    &lt;VulnDiscussion&gt;An ESXi host's configuration consists of configuration files for each service that runs on the host. The configuration files ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ESXi host must configure the firewall to restrict access to services running on the host.

    &lt;VulnDiscussion&gt;Unrestricted access to services running on an ESXi host can expose a host to outside attacks and unauthorized access. Reduce ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host when using Host Profiles and/or Auto Deploy must use the vSphere Authentication Proxy to protect passwords when adding themselves to Active Directory.

    &lt;VulnDiscussion&gt;If a host is configured to join an Active Directory domain using Host Profiles and/or Auto Deploy, the Active Directory crede...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must not use the default Active Directory ESX Admin group.

    &lt;VulnDiscussion&gt;When adding ESXi hosts to Active Directory, all user/group accounts assigned to the Active Directory group "ESX Admins" will ...
    Rule Medium Severity
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  • SRG-OS-000341-VMM-001220

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must configure a persistent log location for all locally stored logs.

    &lt;VulnDiscussion&gt;ESXi can be configured to store log files on an in-memory file system. This occurs when the host's "/scratch" directory is li...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must enforce the exclusive running of executables from approved VIBs.

    &lt;VulnDiscussion&gt;The "execInstalledOnly" advanced ESXi boot option, when set to TRUE, guarantees that the VMkernel executes only those binarie...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must use sufficient entropy for cryptographic operations.

    &lt;VulnDiscussion&gt;Starting in vSphere 8.0, the ESXi Entropy implementation supports the FIPS 140-3 and EAL4 certifications. Kernel boot options...
    Rule Medium Severity
    Show

  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
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  • The ESXi host must not enable log filtering.

    &lt;VulnDiscussion&gt;The log filtering capability allows users to modify the logging policy of the syslog service that is running on an ESXi host....
    Rule Medium Severity
    Show

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