Buffer overflow in youbin allows local users to gain privileges via a long HOME environment variable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11949
http://marc.info/?l=bugtraq&m=105223947528794&w=2
http://lists.grok.org.uk/pipermail/full-disclosure/2003-May/004892.html
http://archives.neohapsis.com/archives/vulnwatch/2003-q2/0053.html