Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2020-3368
Published: June 18, 2020
Vulnerability identifier: #VU29147
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-2020-3368
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 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.
How to mitigate CVE-2020-3368
Install updates from vendor's website.