VMware NSX-V Edge updates address OSPF Protocol LSA DoS
VMware Security Advisory
VMware NSX-V Edge updates address OSPF Protocol LSA DoS.
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 (cve.mitre.org) 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 available.
Replace with/ Apply Patch
NSX Administration Guide, section Logical Router
6. Change log
Initial security advisory in conjunction with the release of NSX-V 6.3.3 on 2017-08-10.
E-mail list for product security notifications and announcements:
This Security Advisory is posted to the following lists:
PGP key at:
VMware Security Advisories
VMware Security Response Policy
VMware Lifecycle Support Phases
VMware Security & Compliance Blog
Copyright 2017 VMware Inc. All rights reserved.