What is CVE-2021-1253?

CVE-2021-1253 is a vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) that could allow an attacker to conduct a cross-site scripting (XSS) attack or a reflected file download (RFD) attack.

How severe is CVE-2021-1253?

CVE-2021-1253 has a severity score of 5.4 out of 10, making it a medium severity vulnerability.

How does CVE-2021-1253 affect Cisco Data Center Network Manager?

CVE-2021-1253 affects Cisco Data Center Network Manager (DCNM) versions up to and including 11.5(1).

What is cross-site scripting (XSS) attack?

Cross-site scripting (XSS) is a type of web security vulnerability where an attacker injects malicious scripts into a trusted website, which then executes the script in the user's browser.

What is a reflected file download (RFD) attack?

A reflected file download (RFD) attack is a type of web-based attack where an attacker tricks the user into downloading a file from a trusted source that is actually controlled by the attacker.

Vulnerability/
CVE-2021-1253

medium

6.5

CWE

79 20

20/1/2021

27/1/2021

CVE-2021-1253: XSS

First published: Wed Jan 20 2021(Updated: )

Multiple vulnerabilities in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow a remote attacker with network-operator privileges to conduct a cross-site scripting (XSS) attack or a reflected file download (RFD) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Data Center Network Manager	<11.5\(1\)

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-xss-vulns-GuUJ39gh

Frequently Asked Questions

What is CVE-2021-1253?
CVE-2021-1253 is a vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) that could allow an attacker to conduct a cross-site scripting (XSS) attack or a reflected file download (RFD) attack.
How severe is CVE-2021-1253?
CVE-2021-1253 has a severity score of 5.4 out of 10, making it a medium severity vulnerability.
How does CVE-2021-1253 affect Cisco Data Center Network Manager?
CVE-2021-1253 affects Cisco Data Center Network Manager (DCNM) versions up to and including 11.5(1).
What is cross-site scripting (XSS) attack?
Cross-site scripting (XSS) is a type of web security vulnerability where an attacker injects malicious scripts into a trusted website, which then executes the script in the user's browser.
What is a reflected file download (RFD) attack?
A reflected file download (RFD) attack is a type of web-based attack where an attacker tricks the user into downloading a file from a trusted source that is actually controlled by the attacker.

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