Ubuntu Security Notice 884-1 – It was discovered that OpenSSL did not correctly free unused memory in certain situations. A remote attacker could trigger this flaw in services that used SSL, causing the service to use all available system memory, leading to a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/85103/USN-884-1.txt
Source: https://packetstormsecurity.com/files/85103/Ubuntu-Security-Notice-884-1.html