Vulnerabilities > CVE-2021-34723 - Exposure of Resource to Wrong Sphere vulnerability in Cisco IOS XE 17.3.1A

CVSS 6.7 - MEDIUM

Attack vector

LOCAL

Attack complexity

LOW

Privileges required

HIGH

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

local

low complexity

cisco

CWE-668

NVD

Published: 2021-09-23

Updated: 2023-11-07

Summary

A vulnerability in a specific CLI command that is run on Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the configuration database of an affected device. This vulnerability is due to insufficient validation of specific CLI command parameters. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content of the configuration database and gain root-level access to an affected device.

Vulnerable Configurations

Part	Description	Count
OS	Cisco Cisco IOS XE 17.3.1A	1
Hardware	Cisco Cisco ASR 1000 X - Cisco ASR 1001 - Cisco ASR 1001 X - Cisco ASR 1002 - Cisco ASR 1002 X - Cisco ASR 1004 - Cisco ASR 1006 - Cisco ASR 1013 - Cisco ASR 1023 - Cisco 4321 Integrated Services Router - Cisco 4331 Integrated Services Router - Cisco 4351 Integrated Services Router - Cisco 4431 Integrated Services Router - Cisco 1100 4G Integrated Services Router - Cisco 1100 4Gltegb Integrated Services Router - Cisco 1100 4Gltena Integrated Services Router - Cisco 1100 6G Integrated Services Router - Cisco 1100 LTE Integrated Services Router - Cisco 1100 Integrated Services Router - Cisco Csr1000V -	20

Common Weakness Enumeration (CWE)

CWE-668 - Exposure of Resource to Wrong Sphere

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn