#VU20489 Input validation error in Cisco NX-OS - CVE-2019-1964

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Main Vulnerability Database Vulnerabilities #VU20489

#VU20489 Input validation error in Cisco NX-OS - CVE-2019-1964

Published: August 30, 2019


Vulnerability identifier: #VU20489
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-1964
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco NX-OS
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to cause an unexpected restart of the netstack process on an affected device.

The vulnerability exists due to improper validation of IPv6 traffic sent through an affected device. A remote attacker can send a malformed IPv6 packet through an affected device, cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.

This vulnerability affects the following products that are running a Cisco NX-OS Software:

  • Nexus 7000 Series Switches
  • Nexus 7700 Series Switches


Remediation

Install update from vendor's website.

External links