CVE-2019-1595: Cisco Nexus 5600 and 6000 Series Switches Fibre Channel over Ethernet Denial of Service Vulnerability
First published: Wed Mar 06 2019(Updated: )
A vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an incorrect allocation of an internal interface index. An adjacent attacker with the ability to submit a crafted FCoE packet that crosses affected interfaces could trigger this vulnerability. A successful exploit could allow the attacker to cause a packet loop and high throughput on the affected interfaces, resulting in a DoS condition. This vulnerability has been fixed in version 7.3(5)N1(1).
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Nx-os | <7.3\(5\)n1\(1\) | |
| Cisco Nexus 5600 | ||
| Cisco Nexus 6000 | ||
| All of | ||
| Cisco Nx-os | <7.3\(5\)n1\(1\) | |
| Any of | ||
| Cisco Nexus 5600 | ||
| Cisco Nexus 6000 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1595?
CVE-2019-1595 is a vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software that could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
How does CVE-2019-1595 affect Cisco NX-OS Software?
CVE-2019-1595 affects Cisco NX-OS Software by causing an incorrect allocation of an internal interface, leading to a denial of service (DoS) condition.
What is the severity of CVE-2019-1595?
The severity of CVE-2019-1595 is high, with a severity value of 6.5.
Which versions of Cisco NX-OS Software are affected by CVE-2019-1595?
Cisco NX-OS Software version 7.3(5)n1(1) is affected by CVE-2019-1595.
How can I fix CVE-2019-1595?
To fix CVE-2019-1595, Cisco advises users to upgrade to a fixed software release.
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