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HIGH · 8.6

CVE-2020-3492

A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers and Cisco AireOS Software for Cisco Wireless LAN Control...

Vulnerability Description

A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers and Cisco AireOS Software for Cisco Wireless LAN Controllers (WLC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of certain parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by spoofing the address of an existing Access Point on the network and sending a Control and Provisioning of Wireless Access Points (CAPWAP) packet that includes a crafted Flexible NetFlow Version 9 record to an affected device. A successful exploit could allow the attacker to cause a process crash that would lead to a reload of the device.

CVSS Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoIos Xe16.12.1
CiscoCatalyst 9800-40-
CiscoCatalyst 9800-80-
CiscoCatalyst 9800-Cl-
CiscoCatalyst 9800-L-
CiscoCatalyst 9800-L-C-
CiscoCatalyst 9800-L-F-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2020-3492?

CVE-2020-3492 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers and Cisco AireOS Software for Cisco Wireless LAN Control...

How severe is CVE-2020-3492?

CVE-2020-3492 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-3492?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 9800-40, Cisco Catalyst 9800-80, Cisco Catalyst 9800-Cl, Cisco Catalyst 9800-L.