-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ----------------------------------------------------------------------- VMware Security Advisory Advisory ID: VMSA-2018-0004.1 Severity: Important Synopsis: VMware vSphere, Workstation and Fusion updates add Hypervisor-Assisted Guest Remediation for speculative execution issue Issue date: 2018-01-09 Updated on: 2018-01-10 CVE number: CVE-2017-5715 1. Summary VMware vSphere, Workstation and Fusion updates add Hypervisor- Assisted Guest remediation for speculative execution issue. Notes: Hypervisor remediation can be classified into the two following categories: - Hypervisor-Specific Remediation (documented in VMSA-2018-0002) - Hypervisor-Assisted Guest Remediation (documented in this advisory) The ESXi patches and new versions of Workstation and Fusion of this advisory include the Hypervisor-Specific Remediation documented in VMware Security Advisory VMSA-2018-0002. More information on the types of Hypervisor remediation may be found in VMware Knowledge Base article 52245. 2. Relevant Products VMware vCenter Server (VC) VMware ESXi (ESXi) VMware Workstation Pro / Player (Workstation) VMware Fusion Pro / Fusion (Fusion) 3. Problem Description New speculative-execution control mechanism for Virtual Machines Updates of vCenter Server, ESXi, Workstation and Fusion virtualize the new speculative-execution control mechanism for Virtual Machines (VMs). As a result, a patched Guest Operating System (Guest OS) can remediate the Branch Target Injection issue (CVE-2017-5715). This issue may allow for information disclosure between processes within the VM. To remediate CVE-2017-5715 in the Guest OS the following VMware and third party requirements must be met: VMware Requirements ------------------- - Deploy the updated version of vCenter Server listed in the table (if vCenter Server is used). - Deploy the ESXi patches and/or the new versions for Workstation or Fusion listed in the table. - Ensure that your VMs are using Hardware Version 9 or higher. For best performance, Hardware Version 11 or higher is recommended. VMware Knowledge Base article 1010675 discusses Hardware Versions. Third party Requirements ------------------------ - Deploy the Guest OS patches for CVE-2017-5715. These patches are to be obtained from your OS vendor. - Update the CPU microcode. Additional microcode is needed for your CPU to be able to expose the new MSRs that are used by the patched Guest OS. This microcode should be available from your hardware platform vendor. VMware is providing several versions of the required microcode from INTEL and AMD through ESXi patches listed in the table. See VMware Knowledge Base 52085 for more details. Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available. VMware Product Running Replace with/ Mitigation Product Version on Severity Apply patch Workaround =========== ======= ======= ======== ============= ========== VC 6.5 Any Important 6.5 U1e * None VC 6.0 Any Important 6.0 U3d * None VC 5.5 Any Important 5.5 U3g * None ESXi 6.5 Any Important ESXi650-201801401-BG None ESXi650-201801402-BG ** ESXi 6.0 Any Important ESXi600-201801401-BG None ESXi600-201801402-BG ** ESXi 5.5 Any Important ESXi550-201801401-BG ** None Workstation 14.x Any Important 14.1.1 None Workstation 12.x Any Important 12.5.9 None Fusion 10.x OS X Important 10.1.1 None Fusion 8.x OS X Important 8.5.10 None * The new versions of vCenter Server set restrictions on ESXi hosts joining an Enhanced vMotion Cluster, see VMware Knowledge Base article 52085 for details. ** These ESXi patches install the microcodes if present for your CPU, see VMware Knowledge Base article 52085. 4. Solution Please review the patch/release notes for your product and version and verify the checksum of your downloaded file. vCenter Server 6.5 U1e Downloads and Documentation: https://my.vmware.com/web/vmware/details?productId=614&rPId=20950 &downloadGroup=VC65U1E vCenter Server 6.0 U3d Downloads and Documentation: https://my.vmware.com/web/vmware/details?downloadGroup=VC60U3D &productId=491&rPId=20946 vCenter Server 5.5 U3g Downloads and Documentation: https://my.vmware.com/web/vmware/details?downloadGroup=VC55U3G &productId=353&rPId=20876 VMware ESXi 6.5 Downloads: https://my.vmware.com/group/vmware/patch Documentation: http://kb.vmware.com/kb/52198 http://kb.vmware.com/kb/52199 VMware ESXi 6.0 Downloads: https://my.vmware.com/group/vmware/patch Documentation: http://kb.vmware.com/kb/52205 http://kb.vmware.com/kb/52206 VMware ESXi 5.5 Downloads: https://my.vmware.com/group/vmware/patch Documentation: http://kb.vmware.com/kb/52127 VMware Workstation Pro, Player 14.1.1 Downloads and Documentation: https://www.vmware.com/go/downloadworkstation https://www.vmware.com/go/downloadplayer https://www.vmware.com/support/pubs/ws_pubs.html VMware Workstation Pro, Player 12.5.9 Downloads and Documentation: https://my.vmware.com/web/vmware/info/slug/desktop_ end_user_computing/vmware_workstation_pro/12_0 https://my.vmware.com/en/web/vmware/free#desktop_end _user_computing/vmware_workstation_player/12_0 https://www.vmware.com/support/pubs/ws_pubs.html VMware Fusion Pro / Fusion 8.5.10, 10.1.1 Downloads and Documentation: https://www.vmware.com/go/downloadfusion https://www.vmware.com/support/pubs/fusion_pubs.html 5. References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715 VMware Knowledge Base Article 52085 https://kb.vmware.com/s/article/52085 VMware Knowledge Base Article 1010675 https://kb.vmware.com/s/article/1010675 VMware Knowledge Base article 52245 https://kb.vmware.com/s/article/52245 - - --------------------------------------------------------------------- 6. Change log 2018-01-09 VMSA-2018-0004 Initial security advisory in conjunction with the release of VMware vCenter Server 5.5 U3g, 6.0 U3d and 6.5 U1e, ESXi 5.5, 6.0, and 6.5 patches, Workstation 14.1.1, and Fusion 10.1.1 and 8.5.10 on 2018-01-09. 2018-01-10 VMSA-2018-0004.1 Updated security advisory to add Workstation 12.x version i.e. 12.5.9 which addresses CVE-2017-5715. - - --------------------------------------------------------------------- 7. Contact E-mail list for product security notifications and announcements: http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce This Security Advisory is posted to the following lists: security-announce@lists.vmware.com bugtraq@securityfocus.com fulldisclosure@seclists.org E-mail: security@vmware.com PGP key at: https://kb.vmware.com/kb/1055 VMware Security Advisories http://www.vmware.com/security/advisories VMware Security Response Policy https://www.vmware.com/support/policies/security_response.html VMware Lifecycle Support Phases https://www.vmware.com/support/policies/lifecycle.html VMware Security & Compliance Blog https://blogs.vmware.com/security Twitter https://twitter.com/VMwareSRC Copyright 2018 VMware Inc. All rights reserved. -----BEGIN PGP SIGNATURE----- Version: Encryption Desktop 10.4.1 (Build 490) Charset: utf-8 wj8DBQFaVwP2DEcm8Vbi9kMRAnc/AKCa4ca89tW4D1J0jzxrYMHXkvPLeACgv/IR EP24OTJfitKiMBbIRLM+rJA= =8hTC -----END PGP SIGNATURE-----