The Cisco IronPort Email Security Appliance (ESA) allows remote attackers to cause a denial of service (CPU consumption) via long Subject headers in e-mail messages, aka Bug ID CSCzv93864.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8016
Reference (s):
- CISCO:20141218 Cisco IronPort ESA Subject Header Length Denial of Service Vulnerability
- URL: http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-8016