Buffer overflow in pppdial in IBM AIX 5.3 and 6.1 allows local users to gain privileges via a long "input string."
http://www.vupen.com/english/advisories/2009/0487
http://www.securityfocus.com/bid/33852
http://www-01.ibm.com/support/docview.wss?uid=isg1IZ44388
http://www-01.ibm.com/support/docview.wss?uid=isg1IZ44332
http://www-01.ibm.com/support/docview.wss?uid=isg1IZ44220
http://www-01.ibm.com/support/docview.wss?uid=isg1IZ44199