The xdrDecodeString function in XNFS.NLM in Novell Netware 6.5 before SP8 allows remote attackers to cause a denial of service (abend) or execute arbitrary code via a crafted, signed value in a NFS RPC request to port UDP 1234, leading to a stack-based buffer overflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65625
http://www.zerodayinitiative.com/advisories/ZDI-11-090
http://www.vupen.com/english/advisories/2011/0497
http://www.securitytracker.com/id?1025119
http://www.securityfocus.com/archive/1/516645/100/0/threaded
http://securityreason.com/securityalert/8104