CVE-2019-1595 Cisco Nexus 5600 and 6000 Series Switches Fibre Channel over Ethernet Denial of Service Vulnerability
An adjacent attacker can cause a denial of service on Cisco Nexus switches by sending crafted FCoE packets, leading to packet loops and high throughput.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1595?
CVE-2019-1595 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 6 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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).
Weakness: CWE-913
Which versions are affected by CVE-2019-1595?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1595?
No fix has been published for CVE-2019-1595 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-1595 being exploited?
There is no known exploitation of CVE-2019-1595 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-6m2h-jq7c-rvm8.