#VU29147 Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2020-3368
Published: June 18, 2020
Vulnerability identifier: #VU29147
Vulnerability risk: Medium
CVSSv4.0: 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-2020-3368
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cisco AsyncOS for Cisco Email Security Appliance
Cisco AsyncOS for Cisco Email Security Appliance
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to bypass the URL reputation filters on an affected device.
The vulnerability exists due to insufficient validation of user-supplied input in the antispam protection mechanisms. A remote attacker can craft the URL in a particular way 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 updates from vendor's website.