Old news (similar patches exist for 2.5 and for x86 2.5 & 2.5.1)
Patch-ID# 103612-23
Keywords: security libc memory su getdate NIS+ libnsl nis_cachemgr rpc.nisd NIS+
Synopsis: SunOS 5.5.1: libc, libnsl, nis_cachemgr and rpc.nisd patch
Date: Apr/21/97
.....
(from 103612-06)
1262666 nscd client backend, getxby_door, has buffer overflows
Note that the libc patches fix several more security problems.
Casper