What is the vulnerability ID for this Cisco Web Security Appliance vulnerability?

The vulnerability ID is CVE-2022-20784.

What is the affected software in this vulnerability?

The affected software is Cisco Web Security Appliance (WSA) running AsyncOS Software.

What is the severity of CVE-2022-20784?

The severity of CVE-2022-20784 is medium (5.3).

How does CVE-2022-20784 work?

CVE-2022-20784 allows an unauthenticated, remote attacker to bypass web request policies and access blocked content on an affected Cisco Web Security Appliance.

Is there a fix available for CVE-2022-20784?

Yes, Cisco has released a security advisory with mitigation details for this vulnerability. Please refer to the provided reference for more information.

Vulnerability/
CVE-2022-20784

medium

5.8

CWE

6/4/2022

6/11/2024

CVE-2022-20784: Cisco Web Security Appliance Filter Bypass Vulnerability

First published: Wed Apr 06 2022(Updated: )

A vulnerability in the Web-Based Reputation Score (WBRS) engine of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass established web request policies and access blocked content on an affected device. This vulnerability is due to incorrect handling of certain character combinations inserted into a URL. An attacker could exploit this vulnerability by sending crafted URLs to be processed by an affected device. A successful exploit could allow the attacker to bypass the web proxy and access web content that has been blocked by policy.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Web Security Appliance	>=11.7.0<14.0.2
Cisco Web Security Appliance

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-swa-filter-bypass-XXXTU3X

Frequently Asked Questions

What is the vulnerability ID for this Cisco Web Security Appliance vulnerability?
The vulnerability ID is CVE-2022-20784.
What is the affected software in this vulnerability?
The affected software is Cisco Web Security Appliance (WSA) running AsyncOS Software.
What is the severity of CVE-2022-20784?
The severity of CVE-2022-20784 is medium (5.3).
How does CVE-2022-20784 work?
CVE-2022-20784 allows an unauthenticated, remote attacker to bypass web request policies and access blocked content on an affected Cisco Web Security Appliance.
Is there a fix available for CVE-2022-20784?
Yes, Cisco has released a security advisory with mitigation details for this vulnerability. Please refer to the provided reference for more information.

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