Input validation error in Cisco IOS XE - CVE-2020-3221

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Main Vulnerability Database Vulnerabilities #VU28764

Input validation error in Cisco IOS XE - CVE-2020-3221

Published: June 5, 2020


Vulnerability identifier: #VU28764
CSH Severity: 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-2020-3221
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XE
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of parameters in a Flexible NetFlow Version 9 record. A remote attacker can send a specially crafted Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device and perform a denial of service (DoS) attack.

This vulnerability affects the following products if they are running affected release of Cisco IOS XE Software: 

  •  Cisco Catalyst 9800 Series Wireless Controllers


Remediation

Install updates from vendor's website.

External links