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VMware vSphere 8.0 ESXi Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000423-VMM-001700

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host must protect the confidentiality and integrity of transmitted information by isolating IP-based storage traffic.

    &lt;VulnDiscussion&gt;Virtual machines (VMs) might share virtual switches and VLANs with the IP-based storage configurations. IP-based storage incl...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host lockdown mode exception users list must be verified.

    &lt;VulnDiscussion&gt;While a host is in lockdown mode (strict or normal), only users on the "Exception Users" list are allowed access. These users...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must not allow host-based authentication.

    &lt;VulnDiscussion&gt;SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts. SSH's cryptogra...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must not permit user environment settings.

    &lt;VulnDiscussion&gt;SSH environment options potentially allow users to bypass access restriction in some configurations. Users must not be able t...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must be configured to not allow gateway ports.

    &lt;VulnDiscussion&gt;SSH Transmission Control Protocol (TCP) connection forwarding provides a mechanism to establish TCP connections proxied by th...
    Rule Low Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must not permit tunnels.

    &lt;VulnDiscussion&gt;OpenSSH has the ability to create network tunnels (layer 2 and layer 3) over an SSH connection. This function can provide sim...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must set a timeout count on idle sessions.

    &lt;VulnDiscussion&gt;Setting a timeout ensures that a user login will be terminated as soon as the "ClientAliveCountMax" is reached.&lt;/VulnDiscu...
    Rule Low Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host Secure Shell (SSH) daemon must set a timeout interval on idle sessions.

    &lt;VulnDiscussion&gt;Automatically logging out idle users guards against compromises via hijacked administrative sessions.&lt;/VulnDiscussion&gt;&...
    Rule Low Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host must disable Simple Network Management Protocol (SNMP) v1 and v2c.

    &lt;VulnDiscussion&gt;If SNMP is not being used, it must remain disabled. If it is being used, the proper trap destination must be configured. If S...
    Rule Medium Severity
  • SRG-OS-000480-VMM-002000

    <GroupDescription></GroupDescription>
    Group
  • The ESXi host must disable Inter-Virtual Machine (VM) Transparent Page Sharing.

    &lt;VulnDiscussion&gt;Published academic papers have demonstrated that by forcing a flush and reload of cache memory, it is possible to measure mem...
    Rule Low Severity

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