HP-UX B.11.00 through B.11.23, when running Ignite-UX and using the add_new_client command, causes the TFTP server to set world-writable permissions on part of the directory tree, which allows remote attackers to modify data or cause disk consumption.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5775
https://exchange.xforce.ibmcloud.com/vulnerabilities/21857
http://securitytracker.com/id?1014711
http://secunia.com/advisories/16456/