Cisco IOS XE up to 17.14.1a SD-Access Fabric Edge Node operator precedence logic error

CVSS Meta Temp Score
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco IOS XE. This vulnerability affects unknown code of the component SD-Access Fabric Edge Node Handler. The manipulation results in operator precedence logic error. This vulnerability is known as CVE-2024-20480. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco IOS XE. Affected is some unknown functionality of the component SD-Access Fabric Edge Node Handler. The manipulation with an unknown input leads to a operator precedence logic error vulnerability. CWE is classifying the issue as CWE-783. The product uses an expression in which operator precedence causes incorrect logic to be used. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2024-20480 since 11/08/2023. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/02/2025).

The vulnerability scanner Nessus provides a plugin with the ID 213466 (Cisco IOS XE Software SD Access Fabric Edge Node DoS (cisco-sa-ios-xe-sda-edge-dos-MBcbG9k)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (213466). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (cisco): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Operator precedence logic error
CWE: CWE-783
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 213466
Nessus Name: Cisco IOS XE Software SD Access Fabric Edge Node DoS (cisco-sa-ios-xe-sda-edge-dos-MBcbG9k)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/08/2023 🔍
09/25/2024 +321 days 🔍
09/25/2024 +0 days 🔍
01/02/2025 +99 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-ios-xe-sda-edge-dos-MBcbG9k
Status: Confirmed

CVE: CVE-2024-20480 (🔍)
GCVE (CVE): GCVE-0-2024-20480
GCVE (VulDB): GCVE-100-278490
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 09/25/2024 18:47
Updated: 01/02/2025 23:22
Changes: 09/25/2024 18:47 (64), 10/04/2024 02:32 (12), 01/02/2025 23:22 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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