CVE-2019-1617: Cisco Nexus 9000 Series Switches Standalone NX-OS Mode Fibre Channel over Ethernet NPV Denial of Service Vulnerability
First published: Wed Mar 06 2019(Updated: )
A vulnerability in the Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to an incorrect processing of FCoE packets when the fcoe-npv feature is uninstalled. An attacker could exploit this vulnerability by sending a stream of FCoE frames from an adjacent host to an affected device. An exploit could allow the attacker to cause packet amplification to occur, resulting in the saturation of interfaces and a DoS condition. Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I7(5) and 9.2(2).
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Nx-os | >=9.2<9.2\(2\) | |
| Cisco N9k-c92160yc-x | ||
| Cisco N9k-c9236c | ||
| Cisco N9k-c9272q | ||
| Cisco N9k-c93180lc-ex | ||
| Cisco N9k-c93180yc-ex | ||
| Cisco N9k-c93180yc-fx | ||
| Cisco N9k-x9732c-ex | ||
| Cisco N9k-x9736c-fx | ||
| Cisco Nx-os | >=7.0\(3\)i5<7.0\(3\)i7\(5\) |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1617?
CVE-2019-1617 is a vulnerability in the Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV) protocol implementation in Cisco NX-OS Software.
How does CVE-2019-1617 affect Cisco NX-OS Software?
CVE-2019-1617 could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition.
What is the severity of CVE-2019-1617?
CVE-2019-1617 has a severity rating of 7.4 (High).
How can I fix CVE-2019-1617?
At the time of writing, there is no known fix for CVE-2019-1617. It is recommended to follow the guidance provided by Cisco in their security advisory.
Where can I find more information about CVE-2019-1617?
More information about CVE-2019-1617 can be found in the security advisory published by Cisco and the related security focus article.
- collector/nvd-index
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/author
- agent/last-modified-date
- agent/title
- agent/first-publish-date
- agent/tags
- agent/description
- agent/event
- vendor/cisco
- canonical/cisco nx-os
- version/cisco nx-os/9.2
- canonical/cisco n9k-c92160yc-x
- canonical/cisco n9k-c9236c
- canonical/cisco n9k-c9272q
- canonical/cisco n9k-c93180lc-ex
- canonical/cisco n9k-c93180yc-ex
- canonical/cisco n9k-c93180yc-fx
- canonical/cisco n9k-x9732c-ex
- canonical/cisco n9k-x9736c-fx
- version/cisco nx-os/7.0\(3\)i5