CVE-2022-20784
Assigner: cisco
Published: 2022-04-06T00:00:00
State: PUBLISHED
affected: product: Cisco Web Security Appliance (WSA) 
vendor: Cisco
versions: status: affected
version: n/a
datePublic: 2022-04-06T00:00:00
descriptions: value: 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.
exploits: value: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. 
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.8
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
version: 3.1
problemTypes: descriptions: cweId: CWE-20
description: CWE-20
type: CWE
source: advisory: cisco-sa-swa-filter-bypass-XXXTU3X
defect: CSCvx78607
discovery: INTERNAL
title: Cisco Web Security Appliance Filter Bypass Vulnerability