What is CVE-2022-20781?

CVE-2022-20781 is a vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) that could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device.

What is the severity of CVE-2022-20781?

The severity of CVE-2022-20781 is medium, with a CVSS score of 5.4.

How does CVE-2022-20781 impact Cisco Web Security Appliance?

CVE-2022-20781 does not impact Cisco Web Security Appliance.

Is there a fix for CVE-2022-20781?

Cisco has released a security advisory with fixes and mitigations for CVE-2022-20781. Please refer to the Cisco Security Advisory for more details.

Vulnerability/
CVE-2022-20781

medium

5.4

CWE

6/4/2022

6/11/2024

CVE-2022-20781: Cisco Web Security Appliance Stored Cross-Site Scripting Vulnerability

Q: How does CVE-2022-20781 affect Cisco AsyncOS Software?

CVE-2022-20781 affects Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) with a version up to exclusive 14.5.

First published: Wed Apr 06 2022(Updated: )

A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco AsyncOS	<14.5
Cisco Web Security Appliance

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-stored-xss-XPsJghMY

Frequently Asked Questions

What is CVE-2022-20781?
CVE-2022-20781 is a vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) that could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device.
What is the severity of CVE-2022-20781?
The severity of CVE-2022-20781 is medium, with a CVSS score of 5.4.
How does CVE-2022-20781 affect Cisco AsyncOS Software?
CVE-2022-20781 affects Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) with a version up to exclusive 14.5.
How does CVE-2022-20781 impact Cisco Web Security Appliance?
CVE-2022-20781 does not impact Cisco Web Security Appliance.
Is there a fix for CVE-2022-20781?
Cisco has released a security advisory with fixes and mitigations for CVE-2022-20781. Please refer to the Cisco Security Advisory for more details.

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