What is the vulnerability ID for this Cisco IOS XE SD-WAN Software and Cisco IOS XE Software vulnerability?

The vulnerability ID is CVE-2021-34729.

What is the severity of CVE-2021-34729?

The severity of CVE-2021-34729 is high with a CVSS score of 6.7.

What is the affected software for CVE-2021-34729?

The affected software for CVE-2021-34729 is Cisco IOS XE SD-WAN Software (Up to and including version 17.3.1a) and Cisco IOS XE Software (Up to and including version 17.3.1a).

Is there a fix available for CVE-2021-34729?

Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

Vulnerability/
CVE-2021-34729

high

7.2

CWE

78 77

22/9/2021

4/8/2024

CVE-2021-34729: Cisco IOS XE SD-WAN Software Command Injection Vulnerability

Q: How does CVE-2021-34729 impact an affected device?

CVE-2021-34729 allows an authenticated, local attacker to execute arbitrary commands with elevated privileges on an affected device.

First published: Wed Sep 22 2021(Updated: )

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software and Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges on an affected device. This vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input in the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands with elevated privileges on the underlying operating system. An attacker would need valid user credentials to exploit this vulnerability.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XE	<=17.3.1a
Cisco IOS XE SD-WAN	<=17.3.1a

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxesdwan-clicmdinj-7bYX5k3

Frequently Asked Questions

What is the vulnerability ID for this Cisco IOS XE SD-WAN Software and Cisco IOS XE Software vulnerability?
The vulnerability ID is CVE-2021-34729.
What is the severity of CVE-2021-34729?
The severity of CVE-2021-34729 is high with a CVSS score of 6.7.
What is the affected software for CVE-2021-34729?
The affected software for CVE-2021-34729 is Cisco IOS XE SD-WAN Software (Up to and including version 17.3.1a) and Cisco IOS XE Software (Up to and including version 17.3.1a).
How does CVE-2021-34729 impact an affected device?
CVE-2021-34729 allows an authenticated, local attacker to execute arbitrary commands with elevated privileges on an affected device.
Is there a fix available for CVE-2021-34729?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

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version/cisco ios xe sd-wan/17.3.1a

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