Cisco IOS XE up to 17.12.1w SD-Access Fabric Edge Node operator precedence logic error

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE. It has been declared as critical. The impacted element is an unknown function of the component SD-Access Fabric Edge Node Handler. Such manipulation leads to operator precedence logic error. This vulnerability is referenced as CVE-2024-20314. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS XE. Affected by this issue is some unknown processing of the component SD-Access Fabric Edge Node Handler. The manipulation with an unknown input leads to a operator precedence logic error vulnerability. Using CWE to declare the problem leads to CWE-783. The product uses an expression in which operator precedence causes incorrect logic to be used. Impacted is availability. CVE summarizes:

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

The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2024-20314 since 11/08/2023. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/08/2023 🔍
03/27/2024 +140 days 🔍
03/27/2024 +0 days 🔍
07/30/2025 +490 days 🔍

Sourcesinfo

Vendor: cisco.com

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

CVE: CVE-2024-20314 (🔍)
GCVE (CVE): GCVE-0-2024-20314
GCVE (VulDB): GCVE-100-258320
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 03/27/2024 18:25
Updated: 07/30/2025 16:34
Changes: 03/27/2024 18:25 (64), 05/06/2024 13:45 (1), 07/30/2025 16:34 (13)
Complete: 🔍
Cache ID: 216::103

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