CVE-2022-20784

published 2022-04-06

CVE-2022-20784: A vulnerability in the Web-Based Reputation Score (WBRS) engine of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an…

Priority P4 31 medium 5.3 CVSS 3.1

AV N AC L PR N UI N S U C L I N A N

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_web_security_appliance	—	—
cisco	web_security_appliance	>= 11.7.0 < 14.0.2	14.0.2
cisco	web_security_appliance_filter	—	—

CVSS provenance

nvd v3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N

vendor_cisco 5.8 MEDIUM

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CWE-20