Multiple buffer overflows in the Spooler service (nwspool.dll) in Novell Netware Client 4.91 through 4.91 SP2 allow remote attackers to execute arbitrary code via a long argument to the (1) EnumPrinters and (2) OpenPrinter functions.

NICM.SYS driver 3.0.0.4, as used in Novell NetWare Client 4.91 SP4, allows local users to execute arbitrary code by opening the \\.\nicm device and providing crafted kernel addresses via IOCTLs with the METHOD_NEITHER buffering mode.

Buffer overflow in Novell NetWare Client 4.80 through 4.83 allows local users to cause a denial of service (crash) by using ping, traceroute, or a similar utility to force the client to resolve a large hostname.