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AUSCERT External Security Bulletin Redistribution
ESB-2017.3241
Security vulnerabilities patched in VMWare products
20 December 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: VMware ESXi
VMware vCenter Server Appliance
VMware Workstation
VMware Fusion
Publisher: VMWare
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Root Compromise -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Cross-site Scripting -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-4943 CVE-2017-4941 CVE-2017-4940
CVE-2017-4933
Original Bulletin:
https://www.vmware.com/security/advisories/VMSA-2017-0021.html
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VMware Security Advisory
Advisory ID: VMSA-2017-0021
Severity: Important
Synopsis: VMware ESXi, vCenter Server Appliance, Workstation &
Fusion updates address multiple security vulnerabilities
Issue date: 2017-12-19
Updated on: 2017-12-19 (Initial Advisory)
CVE number: CVE-2017-4933, CVE-2017-4940, CVE-2017-4941,CVE-2017-4943
1. Summary
VMware ESXi, vCenter Server Appliance, Workstation & Fusion updates
address multiple security vulnerabilities
2. Relevant Releases
VMware vSphere Hypervisor (ESXi)
VMware vCenter Server Appliance (vCSA)
VMware Workstation Pro / Player (Workstation)
VMware Fusion Pro, Fusion (Fusion)
3. Problem Description
a. ESXi, Workstation, and Fusion stack overflow via authenticated
VNC session
VMware ESXi, Workstation, and Fusion contain a vulnerability that
could allow an authenticated VNC session to cause a stack overflow
via a specific set of VNC packets. Successful exploitation of this
issue could result in remote code execution in a virtual machine via
the authenticated VNC session.
Note: In order for exploitation to be possible in ESXi, VNC must be
manually enabled in a virtual machine's .vmx configuration file. In
addition, ESXi must be configured to allow VNC traffic through the
built-in firewall.
VMware would like to thank Lilith Wyatt and another member of Cisco
Talos for reporting this issue to us.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2017-4941 to this issue.
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
=========== ======= ======= ======== ============= ==========
ESXi 6.5 Any N/A not affected N/A
ESXi 6.0 Any Important ESXi600-201711101-SG None
ESXi 5.5 Any Important ESXi550-201709101-SG None
Workstation 14.x Any N/A not affected N/A
Workstation 12.x Any Important 12.5.8 None
Fusion 10.x OSX N/A not affected None
Fusion 8.x OSX Important 8.5.9 None
b. ESXi, Workstation, and Fusion heap overflow via authenticated
VNC session
VMware ESXi, Workstation, and Fusion contain a vulnerability that
could allow an authenticated VNC session to cause a heap overflow
via a specific set of VNC packets resulting in heap corruption.
Successful exploitation of this issue could result in remote code
execution in a virtual machine via the authenticated VNC session.
Note: In order for exploitation to be possible in ESXi, VNC must be
manually enabled in a virtual machine's .vmx configuration file. In
addition, ESXi must be configured to allow VNC traffic through the
built-in firewall.
VMware would like to thank Lilith Wyatt of Cisco Talos for reporting
this issue to us.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2017-4933 to this issue.
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
=========== ======= ======= ======== ============= ==========
ESXi 6.5 Any Important ESXi650-201710401-BG None
ESXi 6.0 Any N/A not affected N/A
ESXi 5.5 Any N/A not affected N/A
Workstation 14.x Any N/A not affected N/A
Workstation 12.x Any Important 12.5.8 None
Fusion 10.x OSX N/A not affected N/A
Fusion 8.x OSX Important 8.5.9 None
c. ESXi Host Client stored cross-site scripting vulnerability
The ESXi Host Client contains a vulnerability that may allow for
stored cross-site scripting (XSS). An attacker can exploit this
vulnerability by injecting Javascript, which might get executed
when other users access the Host Client.
VMware would like to thank Alain Homewood of Insomnia Security
for reporting this issue to us.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2017-4940 to this issue.
Column 4 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/
Product Version on Severity Apply Patch* Workaround
======= ======= ======= ======== ============= ==========
ESXi 6.5 Any Important ESXi650-201712103-SG None
ESXi 6.0 Any Important ESXi600-201711103-SG None
ESXi 5.5 Any Important ESXi550-201709102-SG None
d. Privilege escalation in vCenter Server Appliance (vCSA)
VMware vCenter Server Appliance (vCSA) contains a local privilege
escalation vulnerability via the 'showlog' plugin. Successful
exploitation of this issue could result in a low privileged user
gaining root level privileges over the appliance base OS.
VMware would like to thank Lukasz Plonka for reporting this issue
to us.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2017-4943 to this issue.
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
========== ========= ======= ========= ============== ==========
vCSA 6.5 Linux Important 6.5 U1d None
vCSA 6.0 Linux N/A not affected N/A
vCSA 5.5 Linux N/A not affected N/A
4. Solution
Please review the patch/release notes for your product and
version and verify the checksum of your downloaded file.
ESXi 6.5
-------------
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/2151061
http://kb.vmware.com/kb/51196
ESXi 6.0
-------------
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/2151132
http://kb.vmware.com/kb/2151134
ESXi 5.5
------------
Downloads:
https://my.vmware.com/group/vmware/patch
Documentation:
http://kb.vmware.com/kb/2150876
http://kb.vmware.com/kb/2150878
vCSA 6.5 U1d
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?downloadGroup=VC65U1D&productId=61
4&rPId=20189
VMware Workstation Pro 12.5.8
Downloads and Documentation:
https://www.vmware.com/go/downloadworkstation
https://www.vmware.com/support/pubs/ws_pubs.html
VMware Workstation Player 12.5.8
Downloads and Documentation:
https://www.vmware.com/go/downloadplayer
https://www.vmware.com/support/pubs/player_pubs.html
VMware Fusion Pro / Fusion 8.5.9
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-2017-4933
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4940
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4941
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4943
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6. Change log
2017-12-19 VMSA-2017-0021
Initial security advisory in conjunction with the release of vSphere
6.5 patches on 2017-12-19
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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 2017 VMware Inc. All rights reserved.
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