SB2020101306 - URL Filtering Bypass in Cisco Email Security Appliance
Published: October 13, 2020
Security Bulletin ID
SB2020101306
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) Input validation error (CVE-ID: CVE-2020-3568)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass the URL reputation filters.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can use a spceially crafted URL and bypass the URL reputation filters that are configured for the affected device, which could allow malicious URLs to pass through the device.
Remediation
Install update from vendor's website.