Cisco XE: CVE-2024-20455: Cisco Catalyst SD-WAN Routers Denial of Service Vulnerability

Cisco XE: CVE-2024-20455: Cisco Catalyst SD-WAN Routers Denial of Service Vulnerability

Severity

8

CVSS

(AV:N/AC:L/Au:N/C:N/I:N/A:C)

Published

09/25/2024

Created

09/27/2024

Added

09/26/2024

Modified

02/11/2025

Description

A vulnerability in the process that classifies traffic that is going to the Unified Threat Defense (UTD) component of Cisco IOS XE Software in controller mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because UTD improperly handles certain packets as those packets egress an SD-WAN IPsec tunnel. An attacker could exploit this vulnerability by sending crafted traffic through an SD-WAN IPsec tunnel that is configured on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: SD-WAN tunnels that are configured with Generic Routing Encapsulation (GRE) are not affected by this vulnerability.

Solution(s)

• cisco-xe-update-latest

References

• https://attackerkb.com/topics/cve-2024-20455
• CVE - 2024-20455
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs
• cisco-sa-sdwan-utd-dos-hDATqxs