RC.BOOT in IBM AIX 5.1, 5.2, and 5.3 does not "use a secure location for temporary files," which allows local users to have an unknown impact, probably by overwriting files.

ftpd in IBM AIX 5.1, 5.2 and 5.3 allows remote authenticated users to cause a denial of service (port exhaustion and memory consumption) by using all ephemeral ports.

The ctstrtcasd program in RSCT 2.3.0.0 and earlier on IBM AIX 5.2 and 5.3 does not properly drop privileges before executing the -f option, which allows local users to modify or create arbitrary files.

LSCFG in IBM AIX 5.2 and 5.3 does not create temporary files securely, which allows local users to corrupt /etc/passwd and possibly other system files via the trace file.

lspath in AIX 5.2, 5.3, and possibly earlier versions, does not drop privileges before processing the -f option, which allows local users to read one line of arbitrary files.

Buffer overflow in the PerlIO implementation in Perl 5.8.0, when installed with setuid support (sperl), allows local users to execute arbitrary code by setting the PERLIODEBUG variable and executing a Perl script whose full pathname contains a long directory tree.

rmmlcachefile in bos.rte.install in AIX 5.1.0 through 5.3.0 allows local users to overwrite arbitrary files via a symlink attack on temporary files.