What is CVE-2020-3439?

CVE-2020-3439 is a vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) Software that allows an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.

What is the severity of CVE-2020-3439?

CVE-2020-3439 has a severity rating of medium with a CVSS score of 4.8.

How does CVE-2020-3439 affect Cisco Data Center Network Manager?

CVE-2020-3439 affects all versions of Cisco Data Center Network Manager up to and including version 11.4(1).

What is cross-site scripting (XSS)?

Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by users.

Is there a fix for CVE-2020-3439?

Cisco has released a security advisory with guidance on how to mitigate the vulnerability. Please refer to the Cisco Security Advisory for more information.

Vulnerability/
CVE-2020-3439

medium

5.9

CWE

79 20

26/8/2020

13/11/2024

CVE-2020-3439: Cisco Data Center Network Manager Stored Cross-Site Scripting Vulnerability

First published: Wed Aug 26 2020(Updated: )

A vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Data Center Network Manager	<11.4\(1\)

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-xss-stored-w4rJZJtO

Frequently Asked Questions

What is CVE-2020-3439?
CVE-2020-3439 is a vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) Software that allows an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.
What is the severity of CVE-2020-3439?
CVE-2020-3439 has a severity rating of medium with a CVSS score of 4.8.
How does CVE-2020-3439 affect Cisco Data Center Network Manager?
CVE-2020-3439 affects all versions of Cisco Data Center Network Manager up to and including version 11.4(1).
What is cross-site scripting (XSS)?
Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by users.
Is there a fix for CVE-2020-3439?
Cisco has released a security advisory with guidance on how to mitigate the vulnerability. Please refer to the Cisco Security Advisory for more information.

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