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VMware Security Advisory
Advisory ID: VMSA-2018-0019
Severity: Important
Synopsis: Horizon 6, 7, and Horizon Client for Windows updates
address an out-of-bounds read vulnerability
Issue date: 2018-08-07
Updated on: 2018-08-07 (Initial Advisory)
CVE number: CVE-2018-6970
1. Summary
Horizon 6, 7, and Horizon Client for Windows updates address an
out-of-bounds read vulnerability
2. Relevant Releases
VMware Horizon 6
VMware Horizon 7
VMware Horizon Client for Windows
3. Problem Description
Horizon 6, 7, and Horizon Client for Windows contain an out-of-
bounds read vulnerability in the Message Framework library.
Successfully exploiting this issue may allow a less-privileged user
to leak information from a privileged process running on a system
where Horizon Connection Server, Horizon Agent or Horizon Client are
installed.
Note: This issue doesn’t apply to Horizon 6, 7 Agents installed on
Linux systems or Horizon Clients installed on non-Windows systems.
VMware would like to thank Steven Seeley (mr_me) of Source Incite
working with Trend Micro's Zero Day Initiative for reporting this
issue to us.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the identifier CVE-2018-6970 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
=========== ======= ======= ========= ============= ==========
Horizon 7 7.x.x Windows Important 7.5.1 None
Horizon 6 6.x.x Windows Important 6.2.7 None
Horizon Client 4.x.x Windows Important 4.8.1 None
for Windows & prior
4. Solution
Please review the patch/release notes for your product and
version and verify the checksum of your downloaded file.
VMware Horizon 7 version 7.5.1
Downloads and Documentation:
https://my.vmware.com/en/web/vmware/info/slug/
desktop_end_user_computing/vmware_horizon/7_5
VMware Horizon 6 version 6.2.7
Downloads and Documentation:
https://my.vmware.com/group/vmware/info?slug=
desktop_end_user_computing/vmware_horizon/6_2
VMware Horizon Client for Windows 4.8.1
Downloads and Documentation:
https://my.vmware.com/web/vmware/details?productId=
578&downloadGroup=CART19FQ2_WIN_4_8_1
5. References
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6970
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6. Change log
2018-08-07 VMSA-2018-0019
Initial security advisory in conjunction with the release of VMware
Horizon 6 version 6.2.7 and Horizon Client 4.8.1 on 2018-08-07
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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 at lists.vmware.com
bugtraq at securityfocus.com
fulldisclosure at seclists.org
E-mail: security at 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.
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