Vulnerabilities > CVE-2024-20480 - Always-Incorrect Control Flow Implementation vulnerability in Cisco IOS XE

CVSS 8.6 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

cisco

CWE-670

NVD

Published: 2024-09-25

Updated: 2024-10-03

Summary

A vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on Software-Defined Access (SD-Access) fabric edge nodes could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device, resulting in a denial of service (DoS) condition that requires a manual reload to recover. This vulnerability is due to improper handling of IPv4 DHCP packets. An attacker could exploit this vulnerability by sending certain IPv4 DHCP packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition that requires a manual reload to recover.

Vulnerable Configurations

Part	Description	Count
OS	Cisco Cisco IOS XE 16.2.1 Cisco IOS XE 16.1.3 Cisco IOS XE 16.1.2 Cisco IOS XE 16.6.1 Cisco IOS XE 16.1.1 Cisco IOS XE 16.4.1 Cisco IOS XE 16.2.2 Cisco IOS XE 16.3.1 Cisco IOS XE 16.3.1A Cisco IOS XE 16.3.2 Cisco IOS XE 16.3.3 Cisco IOS XE 16.5.1 Cisco IOS XE 16.5.1A Cisco IOS XE 16.3.4 Cisco IOS XE 16.5.1B Cisco IOS XE 16.4.2 Cisco IOS XE 16.3.5B Cisco IOS XE 16.3.6 Cisco IOS XE 16.6.3 Cisco IOS XE 16.8.1 Cisco IOS XE 16.7.1 Cisco IOS XE 16.6.2 Cisco IOS XE 16.9.1 Cisco IOS XE 16.3.5 Cisco IOS XE 16.5.2 Cisco IOS XE 16.8.1A Cisco IOS XE 16.8.1S Cisco IOS XE 16.8.1B Cisco IOS XE 16.8.2 Cisco IOS XE 16.7.2 Cisco IOS XE 16.8.1D Cisco IOS XE 16.7.3 Cisco IOS XE 16.7.1A Cisco IOS XE 16.7.1B Cisco IOS XE 16.8.1C Cisco IOS XE 16.8.1E Cisco IOS XE 16.4.3 Cisco IOS XE 16.9.1S Cisco IOS XE 16.9.1B Cisco IOS XE 16.5.3 Cisco IOS XE 16.3.7 Cisco IOS XE 16.3.8 Cisco IOS XE 16.6.4 Cisco IOS XE 16.10.1 Cisco IOS XE 16.7.4 Cisco IOS XE 16.9.1A Cisco IOS XE 16.9.2 Cisco IOS XE 16.6.4A Cisco IOS XE 16.12.1 Cisco IOS XE 16.6.5 Cisco IOS XE 16.11.1 Cisco IOS XE 17.1.1 Cisco IOS XE 16.11.1A Cisco IOS XE 16.12.1C Cisco IOS XE 16.12.1T Cisco IOS XE 16.11.2 Cisco IOS XE 16.12.1S Cisco IOS XE 16.12.1A Cisco IOS XE 16.12.1X Cisco IOS XE 16.11.1B Cisco IOS XE 16.11.1S Cisco IOS XE 16.12.1W Cisco IOS XE 16.10.1S Cisco IOS XE 16.10.1D Cisco IOS XE 16.6.6 Cisco IOS XE 16.6.5A Cisco IOS XE 16.3.9 Cisco IOS XE 16.9.3A Cisco IOS XE 16.10.1A Cisco IOS XE 16.10.1F Cisco IOS XE 16.10.1G Cisco IOS XE 16.10.2 Cisco IOS XE 16.9.3 Cisco IOS XE 16.12.1Y Cisco IOS XE 16.10.1E Cisco IOS XE 16.10.1B Cisco IOS XE 16.8.3 Cisco IOS XE 16.10.1C Cisco IOS XE 16.9.4 Cisco IOS XE 16.12.2 Cisco IOS XE 16.12.2A Cisco IOS XE 16.6.7 Cisco IOS XE 16.10.3 Cisco IOS XE 16.12.4 Cisco IOS XE 16.12.8 Cisco IOS XE 16.3.10 Cisco IOS XE 16.9.5 Cisco IOS XE 16.9.5F Cisco IOS XE 16.6.8 Cisco IOS XE 16.12.3 Cisco IOS XE 17.2.1 Cisco IOS XE 17.4.1 Cisco IOS XE 16.6.9 Cisco IOS XE 17.1.1S Cisco IOS XE 17.1.1A Cisco IOS XE 16.12.2S Cisco IOS XE 16.12.3A Cisco IOS XE 17.1.1T Cisco IOS XE 16.3.11 Cisco IOS XE 17.2.1A Cisco IOS XE 17.2.1V Cisco IOS XE 16.12.3S Cisco IOS XE 17.2.1R Cisco IOS XE 16.12.4A Cisco IOS XE 17.1.3 Cisco IOS XE 17.2.2 Cisco IOS XE 17.3.1 Cisco IOS XE 17.4.1A Cisco IOS XE 17.3.2 Cisco IOS XE 17.4.1B Cisco IOS XE 17.3.1A Cisco IOS XE 17.3.2A Cisco IOS XE 17.3.1W Cisco IOS XE 17.2.3 Cisco IOS XE 16.9.6 Cisco IOS XE 17.3.1X Cisco IOS XE 16.12.5 Cisco IOS XE 16.12.5B Cisco IOS XE 16.12.1Z1 Cisco IOS XE 16.12.5A Cisco IOS XE 17.5.1 Cisco IOS XE 16.12.1Z2 Cisco IOS XE 17.3.1Z Cisco IOS XE 17.3.3 Cisco IOS XE 16.9.7 Cisco IOS XE 17.5.1A Cisco IOS XE 17.6.1 Cisco IOS XE 17.3.4A Cisco IOS XE 17.4.2 Cisco IOS XE 17.3.4B Cisco IOS XE 17.6.1A Cisco IOS XE 17.3.4C Cisco IOS XE 16.6.10 Cisco IOS XE 17.4.2A Cisco IOS XE 16.9.8 Cisco IOS XE 17.3.4 Cisco IOS XE 17.6.1W Cisco IOS XE 16.12.6A Cisco IOS XE 16.12.6 Cisco IOS XE 17.6.3 Cisco IOS XE 17.9.1 Cisco IOS XE 16.12.7 Cisco IOS XE 17.3.5 Cisco IOS XE 17.6.2 Cisco IOS XE 17.6.3A Cisco IOS XE 17.7.1 Cisco IOS XE 17.7.1A Cisco IOS XE 17.7.2 Cisco IOS XE 17.8.1 Cisco IOS XE 17.8.1A Cisco IOS XE 17.11.1 Cisco IOS XE 17.10.1 Cisco IOS XE 17.3.6 Cisco IOS XE 17.3.5A Cisco IOS XE 17.3.5B Cisco IOS XE 17.6.4 Cisco IOS XE 17.9.1A Cisco IOS XE 17.9.1W Cisco IOS XE 16.12.9 Cisco IOS XE 17.3.7 Cisco IOS XE 17.6.1X Cisco IOS XE 17.6.1Y Cisco IOS XE 17.6.1Z Cisco IOS XE 17.6.1Z1 Cisco IOS XE 17.6.5 Cisco IOS XE 17.7.1B Cisco IOS XE 17.10.1A Cisco IOS XE 17.10.1B Cisco IOS XE 17.9.2 Cisco IOS XE 17.9.1X Cisco IOS XE 17.9.1Y Cisco IOS XE 17.9.3 Cisco IOS XE 17.9.2A Cisco IOS XE 17.9.1X1 Cisco IOS XE 17.9.3A Cisco IOS XE 17.9.1Y1 Cisco IOS XE 17.11.1A Cisco IOS XE 17.11.99Sw Cisco IOS XE 17.6.5A Cisco IOS XE 17.13.1A Cisco IOS XE 17.13.1 Cisco IOS XE 17.12.1Y Cisco IOS XE 17.12.2A Cisco IOS XE 17.12.3 Cisco IOS XE 17.12.2 Cisco IOS XE 17.12.1X Cisco IOS XE 17.12.1A Cisco IOS XE 17.12.1W Cisco IOS XE 17.12.1 Cisco IOS XE 17.9.5B Cisco IOS XE 17.9.5A Cisco IOS XE 17.9.4A Cisco IOS XE 17.9.5 Cisco IOS XE 17.9.4 Cisco IOS XE 17.6.7 Cisco IOS XE 17.6.6A Cisco IOS XE 17.6.6 Cisco IOS XE 17.3.8A Cisco IOS XE 17.3.8 Cisco IOS XE 16.12.11 Cisco IOS XE 16.12.10A Cisco IOS XE 16.12.10 Cisco IOS XE 17.14.1A Cisco IOS XE 17.12.3A Cisco IOS XE 17.14.1	205

Common Weakness Enumeration (CWE)

CWE-670 - Always-Incorrect Control Flow Implementation

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-MBcbG9k