Avaya IP Office Manager TFTP Denial of Service Vulnerability

The host is running Avaya IP Office Manager TFTP Server and is prone to denial of service vulnerability.
Successful exploitation will allow unauthenticated attackers to cause the application to crash. Impact Level: Application
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one. A workaround is to restrict access to trusted hosts only (e.g. via MAC-based network access control lists).
The flaw is due to an error while handling certain crafted TFTP write requests, which can be exploited by remote unauthenticated attackers to crash an affected application
Avaya Ip Office Manager 8.1, Other versions may also be affected.