CVE-2019-1617: Cisco Nexus 9000 Series Switches Standalone NX-OS Mode Fibre Channel over Ethernet NPV Denial of Service Vulnerability

Vulnerability summary

CVE-2019-1617 is a high (CVSS 7.4) vulnerability in cisco nexus 9000 series switches in standalone nx-os mode. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 11-03-2019
   PublishedVulnerability first disclosed.
2. 21-11-2024
   Last modifiedVulnerability information updated.

Description

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).

• CWE-913Improper Control of Dynamically-Managed Code ResourcesThe product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.