What is the vulnerability ID for this Cisco DNA Center vulnerability?

The vulnerability ID for this Cisco DNA Center vulnerability is CVE-2021-1134.

What is the severity level of CVE-2021-1134?

The severity level of CVE-2021-1134 is high.

What is the affected software for CVE-2021-1134?

The affected software for CVE-2021-1134 is Cisco DNA Center versions up to and excluding 2.2.2.1.

How can I fix CVE-2021-1134?

To fix CVE-2021-1134, it is recommended to upgrade to a version of Cisco DNA Center that is not affected by this vulnerability.

Vulnerability/
CVE-2021-1134

high

7.4

CWE

295

29/6/2021

7/11/2024

CVE-2021-1134: Cisco DNA Center Certificate Validation Vulnerability

Q: How does CVE-2021-1134 allow unauthorized access to sensitive data?

CVE-2021-1134 allows unauthorized access to sensitive data through an incomplete validation of the X.509 certificate used during the integration feature of the Cisco DNA Center Software.

First published: Tue Jun 29 2021(Updated: )

A vulnerability in the Cisco Identity Services Engine (ISE) integration feature of the Cisco DNA Center Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and an ISE server. An attacker could exploit this vulnerability by supplying a crafted certificate and could then intercept communications between the ISE and DNA Center. A successful exploit could allow the attacker to view and alter sensitive information that the ISE maintains about clients that are connected to the network.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco DNA Center	<2.2.2.1

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-certvalid-USEj2CZk

Frequently Asked Questions

What is the vulnerability ID for this Cisco DNA Center vulnerability?
The vulnerability ID for this Cisco DNA Center vulnerability is CVE-2021-1134.
What is the severity level of CVE-2021-1134?
The severity level of CVE-2021-1134 is high.
How does CVE-2021-1134 allow unauthorized access to sensitive data?
CVE-2021-1134 allows unauthorized access to sensitive data through an incomplete validation of the X.509 certificate used during the integration feature of the Cisco DNA Center Software.
What is the affected software for CVE-2021-1134?
The affected software for CVE-2021-1134 is Cisco DNA Center versions up to and excluding 2.2.2.1.
How can I fix CVE-2021-1134?
To fix CVE-2021-1134, it is recommended to upgrade to a version of Cisco DNA Center that is not affected by this vulnerability.

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