Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2019-1947
Published: February 20, 2020
Vulnerability identifier: #VU25480
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-1947
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists within the email message filtering feature due to improper handling of email messages that contain large attachments. A remote attacker can send a malicious email message through the targeted device and cause a permanent DoS condition due to high CPU utilization.
Affected software
Cisco AsyncOS for Cisco Email Security Appliance
How to mitigate CVE-2019-1947
Install updates from vendor's website.
Cisco AsyncOS for Cisco Email Security Appliance - update to 12.5.0 059