Detections
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Cisco IOS XE Software SD Access Fabric Edge Node DoS (cisco-sa-ios-xe-sda-edge-dos-MBcbG9k)

high Nessus Plugin ID 213466

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability.

 - 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. (CVE-2024-20480)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwk36431

See Also

http://www.nessus.org/u?e0341eea

http://www.nessus.org/u?2710d954

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwk36431

Plugin Details

Severity: High

ID: 213466

File Name: cisco-sa-ios-xe-sda-edge-dos-MBcbG9k-iosxe.nasl

Version: 1.1

Type: combined

Family: CISCO

Published: 1/2/2025

Updated: 1/2/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-20480

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/25/2024

Vulnerability Publication Date: 9/25/2024

Reference Information

CVE: CVE-2024-20480

CWE: 783

CISCO-SA: cisco-sa-ios-xe-sda-edge-dos-MBcbG9k

IAVA: 2024-A-0592

CISCO-BUG-ID: CSCwk36431