Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2020-3568
Published: October 8, 2020 / Updated: October 13, 2020
Vulnerability identifier: #VU47526
CSH Severity: Medium
CVSS v4.0: 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
CVE-ID: CVE-2020-3568
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco AsyncOS for Cisco Email Security Appliance
Cisco AsyncOS for Cisco Email Security Appliance
Detailed vulnerability description
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.
How to mitigate CVE-2020-3568
Install updates from vendor's website.