What is CVE-2023-20104?

CVE-2023-20104 is a vulnerability in the file upload functionality of Cisco Webex App for Web that could allow an unauthenticated attacker to conduct a cross-site scripting (XSS) attack.

How can an attacker exploit CVE-2023-20104?

An attacker can exploit CVE-2023-20104 by uploading a malicious file to the Cisco Webex App for Web and tricking a user into opening it, which can lead to a cross-site scripting attack.

What is the severity of CVE-2023-20104?

The severity of CVE-2023-20104 is medium with a CVSS score of 6.1.

How can I fix CVE-2023-20104?

To fix CVE-2023-20104, it is recommended to apply the necessary security patch provided by Cisco.

Where can I find more information about CVE-2023-20104?

You can find more information about CVE-2023-20104 on the Cisco Security Advisory page at: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-Yn8HHsMJ

Vulnerability/
CVE-2023-20104

medium

6.1

CWE

3/3/2023

25/10/2024

CVE-2023-20104: Cisco Webex App for Web Cross-Site Scripting Vulnerability

First published: Fri Mar 03 2023(Updated: )

A vulnerability in the file upload functionality of Cisco Webex App for Web could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending an arbitrary file to a user and persuading that user to browse to a specific URL. 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 Webex Teams

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Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-Yn8HHsMJ

Frequently Asked Questions

What is CVE-2023-20104?
CVE-2023-20104 is a vulnerability in the file upload functionality of Cisco Webex App for Web that could allow an unauthenticated attacker to conduct a cross-site scripting (XSS) attack.
How can an attacker exploit CVE-2023-20104?
An attacker can exploit CVE-2023-20104 by uploading a malicious file to the Cisco Webex App for Web and tricking a user into opening it, which can lead to a cross-site scripting attack.
What is the severity of CVE-2023-20104?
The severity of CVE-2023-20104 is medium with a CVSS score of 6.1.
How can I fix CVE-2023-20104?
To fix CVE-2023-20104, it is recommended to apply the necessary security patch provided by Cisco.
Where can I find more information about CVE-2023-20104?
You can find more information about CVE-2023-20104 on the Cisco Security Advisory page at: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-Yn8HHsMJ

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