CVEvulnerability

CVE-2020-3221

8.6 HIGH Published 2020-06-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-06-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 3.0 ([email protected])
8.6 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-20

Description

A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by sending a malformed Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device. An exploit could allow the attacker to trigger an infinite loop, resulting in a process crash that would cause a reload of the device.

Affected configurations

• cisco ios xe 16.10.1 • cisco ios xe 16.10.1a • cisco ios xe 16.10.1b • cisco ios xe 16.10.1e • cisco ios xe 16.10.1s • cisco ios xe 16.10.2 • cisco ios xe 16.11.1 • cisco ios xe 16.11.1a • cisco ios xe 16.11.1b • cisco ios xe 16.11.1c • cisco ios xe 16.11.1s • cisco ios xe 16.12.1 • cisco ios xe 16.12.1a • cisco ios xe 16.12.1c • cisco ios xe 16.12.1s • cisco ios xe 16.12.1t

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References