SB2020022013 - Multiple vulnerabilities in Cisco AsyncOS for Cisco Email Security Appliance and Content Security Management Appliance

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2019-1947)

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.

2) Input validation error (CVE-ID: CVE-2019-1983)

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 insufficient input validation of email attachments. A remote attacker can send an email message with a crafted attachment through an affected device and cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-esa-dos
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-esa-sma-dos