Multiple buffer overflows in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM) Portmapper service (aka portmap.exe), as used in IBM Informix Dynamic Server (IDS) 10.x before 10.00.TC9 and 11.x before 11.10.TC3, allow remote attackers to execute arbitrary code via a crafted parameter size.
http://www.zerodayinitiative.com/advisories/ZDI-10-022
http://www.vupen.com/english/advisories/2010/0508
http://www.securityfocus.com/bid/38471
http://www.securityfocus.com/archive/1/509789/100/0/threaded
http://www.ibm.com/support/docview.wss?uid=swg1IC55330
http://www.ibm.com/support/docview.wss?uid=swg1IC55329