Security features bypass in Cisco Web Security Appliance - CVE-2022-20784
Published: April 6, 2022
Vulnerability identifier: #VU61940
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-20784
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco Web Security Appliance
Cisco Web Security Appliance
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to gain access to blocked content.
The vulnerability exists due to improper input validation in the Web-Based Reputation Score (WBRS) engine of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA). A remote non-authenticated attacker can bypass established web request policies and access blocked content on an affected device.
Remediation
Install updates from vendor's website.