SB2022040625 - Filter bypass vulnerability in Cisco Web Security Appliance
Published: April 6, 2022
Security Bulletin ID
SB2022040625
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Security features bypass (CVE-ID: CVE-2022-20784)
CWE-ID: CWE-254 - Security Features
CVSSv4: 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
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 update from vendor's website.