Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2020-3133
Published: January 27, 2020
Vulnerability identifier: #VU24669
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2020-3133
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass configured filters on the target device.
The vulnerability exists due to improper validation of incoming emails. A remote attacker can send a specially crafted email message to a recipient protected by the ESA and bypass the configured content filters, which could allow malicious content to pass through the device.
Affected software
Cisco AsyncOS for Cisco Email Security Appliance
How to mitigate CVE-2020-3133
Install updates from vendor's website.
Cisco AsyncOS for Cisco Email Security Appliance - update to 13.0