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VMware vCenter Server 6.5 Update 2c Release Notes

vCenter Server 6.5 Update 2c | 14 AUG| 2018 | ISO Build 9451637
vCenter Server Appliance 6.5 Update 2c | 14 AUG 2018 | ISO Build 9451637

Check for additions and updates to these release notes.

What's in the Release Notes

The release notes cover the following topics:

What's New

The vCenter Server 6.5 Update 2c release includes the following list of new features:

  • vCenter Server 6.5 Update 2c and ESXi 6.5 Patch Release ESXi650-201808001 introduce the ESXi advanced configuration option HyperthreadingMitigation. The new option mitigates the vulnerability described in CVE-2018-3646. For more information on vulnerability assessment and full mitigation steps for the vSphere environment, see the VMware Knowledge base article 55636
  • vCenter Server 6.5 Update 2c and ESXi 6.5 Patch Release ESXi650-201808001 introduce the ESXi advanced configuration option SuppressHyperthreadWarning. After the installation of the ESXi patch, if your environment has hosts vulnerable to CVE-2018-3646, an alert is displayed in the Summary tab of either the vSphere Web Client or vSphere Client. SuppressHyperthreadWarning can be used to suppress this alert.

Earlier Releases of vCenter Server 6.5

Features and known issues of vCenter Server are described in the release notes for each release. Release notes for earlier releases of vCenter Server 6.5 are:

For compatibility, installation and upgrades, product support notices, and features see the VMware vCenter Server 6.5 Update 2 Release Notes.

Patches Contained in This Release

vCenter Server 6.5 Update 2c delivers the following patch. See the VMware Patch Download Center for more information on downloading patches.

Full Patch for VMware vCenter Server Appliance 6.5 Update 2c

Product Patch for vCenter Server Appliance 6.5 containing VMware software fixes, security fixes, and Third Party Product fixes (for example: JRE and tcServer).

This patch is applicable to the vCenter Server Appliance and Platform Services Controller Appliance.

For vCenter Server and Platform Services Controller Appliances

Download Filename VMware-vCenter-Server-Appliance-6.5.0.22000-9451637-patch-FP.iso
Build 9451637
Download Size 1605.9 MB
md5sum f224d0e315ae29fa41e31f4cf6b84eea
sha1checksum b6e34c646eeacc059a74c02d72a0764d3cedc13d

Download and Installation

You can download this patch by going to the VMware Patch Download Center and choosing VC from the Search by Product drop-down menu.

  1. Attach the VMware-vCenter-Server-Appliance-6.5.0.22000-9451637-patch-FP.iso file to the vCenter Server Appliance CD or DVD drive.
  2. Log in to the appliance shell as root and run the commands given below:
    • To stage the ISO:

      software-packages stage --iso

    • To see the staged content:

      software-packages list --staged

    • To install the staged rpms:

      software-packages install --staged

For more information on patching the vCenter Server Appliance, see Patching the vCenter Server Appliance.

For more information on staging patches, see Stage Patches to vCenter Server Appliance.

For more information on installing patches, see Install vCenter Server Appliance Patches.

For issues resolved in this patch see Resolved Issues.

For more information on patching using the Appliance Management Interface, see Patching the vCenter Server Appliance by Using the Appliance Management Interface.

Upgrade Notes for This Release

Important: Upgrade and migration paths from vCenter Server 6.5 Update 2 and above to vCenter Server 6.7 and later are not supported.

Resolved Issues

The resolved issues are grouped as follows.

Security Issues
  • VMware vCenter Server 6.5 Update 2c is one of several steps needed to mitigate CVE-2018-3646. For more information on vulnerability assessment and full mitigation steps for the vSphere environment, see the VMware Knowledge base article 55636.

Known Issues

The known issues are grouped as follows.

vCenter Server Appliance, vCenter Server, vSphere Web Client and vSphere Client Issues
  • Trying to disable the usage of Hyperthreading after enabling the HyperthreadingMitigation option on an ESXi host might trigger an incorrect message in the Processors view

    When you enable the HyperthreadingMitigation option on an ESXi host, by setting VMkernel.Boot.HyperthreadingMitigation to True, the usage of Hyperthreading by this ESXi patch is disabled, regardless of the previous settings. If you decide to change the setting VMkernel.Boot.Hyperthreading to False to disable the option, you might see the message Disabled (Enabled on restart) in the Processors view. In fact, Hyperthreading is not used after the restart.

    Workaround: None. Ignore the message.

Known Issues from Earlier Releases

To view a list of previous known issues, click here.