#
# Lets take a look at setuid0 programs, first
#
ping, traceroute
ping programs
NET_RAW, NET_BROADCAST
none
.
sl
fping
ping programs
NET_RAW, NET_BROADCAST
none
.
0l
mount, umount, fdmount
mount utilities
SYS_ADMIN
none
.
.
su, login
user login
SETUID, SETGID
ro /etc/shadow
.
.
newgrp
group login
SETGID
ro /etc/gshadow
.
.
rcp, rlogin, rsh, ssh1
remote login
NET_BIND_SERVICE
none
.
s
cons.saver
vcsa access wrapper for midnight
none
rw /dev/vcsa*
Older versions of cons.saver need r/w access to /dev/tty, fixed in 4.5.32.
s
gpasswd
setting of group information
none
rw /etc/{group,gshadow}
.
.
chfn, chsh, passwd, chage
setting of user information
none
rw /etc/{passwd,shadow}
.
.
screen, xterm
terminals
none
rw /var/run/{utmp,wtmp}
.
.
ncpmount, ncpumount, nwsfind
netware utilities
SYS_ADMIN, NET_RAW
none
.
l
XF86_*, Xwrapper
X-windows servers
NET_BIND_SERVICE, SYS_RAWIO
none
.
0
lpr, lprm, lpq, lpc
printer spooling
none
rw *
I'm not sure what they really need to access
.
sendmail
mail handler
NET_BIND_SERVICE
none
.
s
procmail
mail delivery
SETUID
rw *
I'm not sure about this one
.
at, crontab
Scheduling of jobs for later execution
none
rw *
They only need special fs rights but I'm not sure which rights. Unfortunately, breaking into these gives you full root few seconds later, so...
.
suidperl, sperl*
Perl setuid handler
ALL
ALL
No workaround for this one, they really need full root by design.
.
pppd
Point-to-point protocol handler
none
none
It is setuid root but executable only by group root. I wonder what this can be good for?
.
dga, xload, expiry
Miscelaus
none
none
probably unneccessary
.
zgv
SVGAlib programs
none
none
These programs are unsafe by design. They usually drop uid0 at the beggining, but that is not enough as they keep /dev/kmem open. Bad, bad. [They would like SYS_RAWIO and rw /dev/kmem for their function, but as they are designed to be security hole I think we better warn about them.]
.
#
# Daemons running with uid==0 come to mind, next
#
init
System runlevel changer
ALL
ALL
.
d
gpm, syslogd, klogd, cardmgr, bdflush, *getty, cron
Basic system daemons
ALL
ALL
.
d
portmap
Port mapping service for rpc
NET_BIND_SERVICE
none
.
d
inetd, munetd
Launchers of other daemons
ALL
ALL
.
d
sshd, rpc.nfsd, rpc.mountd, rpc.rstatd, ftpd, in.telnetd, in.rshd, in.rlogind, in.rexecd, in.ntalkd, in.talkd, bootps, cucipop, *finger*
internet services
ALL
ALL
I'm sure some of these can run with lower priviledges
d
identd, tftp
internet services
none
none
These are internet services that were configure to run non-root on my system
d
#
# Trap for everything unknown
#
*
unknown to me
none
none
I do not know this programs, feel free to add them to capbase.txt and mail me resulting file
.