NEW VMSA-2017-0014 VMware NSX-V Edge updates address OSPF Protocol LSA DoS

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                           VMware Security Advisory
Advisory ID: VMSA-2017-0014
Severity:    Important
Synopsis:    VMware NSX-V Edge updates address OSPF Protocol LSA DoS
Issue date:  2017-08-10
Updated on:  2017-08-10 (Initial Advisory)
CVE number:  CVE-2017-4920

1. Summary
   VMware NSX-V Edge updates address OSPF Protocol LSA Denial of
2. Relevant Products
   VMware NSX-V Edge
3. Problem Description
   a. VMware NSX-V Edge OSPF Protocol LSA Denial of Service
   VMware NSX-V implementation of the OSPF protocol doesn’t correctly
   handle the link-state advertisement (LSA). A rogue LSA may exploit
   this issue resulting in continuous sending of LSAs between two
   routers eventually going in loop or loss of connectivity.
   Note: The issue cannot be exploited in case the OSPF protocol is not
   configured. At setup time, no particular protocol is configured. For
   more information on static and dynamic routing for NSX Edge refer to
   the NSX Administration Guide, section Logical Router.
   VMware would like to thank Adi Sosnovich, Orna Grumberg and Gabi
   Nakibly for reporting this issue to us.
   The Common Vulnerabilities and Exposures project ( has
   assigned the identifier CVE-2017-4920 to this issue.
   Column 5 of the following table lists the action required to
   remediate the vulnerability in each release, if a solution is
   VMware          Product Running            Replace with/  Mitigation/
   Product         Version on      Severity   Apply patch    Workaround
   ===========     ======= ======= ========   =============  ==========
   NSX-V Edge      6.3.x   any     Important  6.3.3          N/A
   NSX-V Edge      6.2.x   any     Important  6.2.8          N/A
4. Solution
   Please review the patch/release notes for your product and version
   and verify the checksum of your downloaded file.
   VMware NSX-V
5. References
   NSX Administration Guide, section Logical Router.
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6. Change log
   2017-08-10 VMSA-2017-0014
   Initial security advisory in conjunction with the release of
   NSX-V 6.3.3 on 2017-08-10.
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7. Contact
   E-mail list for product security notifications and announcements:
   This Security Advisory is posted to the following lists:
   security-announce at
   bugtraq at
   fulldisclosure at
   E-mail: security at
   VMware Security Advisories
   Consolidated list of VMware Security Advisories
   VMware Security Response Policy
   VMware Lifecycle Support Phases
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   Copyright 2017 VMware Inc.  All rights reserved.
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