Ubuntu Security Notice USN-3493-1

Ubuntu Security Notice 3493-1 – It was discovered that Exim incorrectly handled memory in the ESMTP CHUNKING extension. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code. The default compiler options for affected releases should reduce the vulnerability to a denial of service.

Link: https://packetstormsecurity.com/files/145116/USN-3493-1.txt