diff options
Diffstat (limited to 'init-sh/levelsnf.sh')
| -rwxr-xr-x | init-sh/levelsnf.sh | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/init-sh/levelsnf.sh b/init-sh/levelsnf.sh new file mode 100755 index 0000000..e86aba8 --- /dev/null +++ b/init-sh/levelsnf.sh @@ -0,0 +1,127 @@ +#!/bin/bash + + +# +# Security level implementation... +# Writen by Vandoorselaere Yoann <yoann@mandrakesoft.com> +# + +if [[ -f /usr/share/msec/lib.sh ]]; then + . /usr/share/msec/lib.sh +else + echo "Can't find /usr/share/msec/lib.sh, exiting." + exit 1 +fi + +# Log in append only mode +echo -e "Changing attribute of /var/log/* to append only...\n" + +# All events logged on tty12 +echo "Loging all messages on tty12 : " +AddRules "*.* /dev/tty12" /etc/syslog.conf + +# Prevent all kind of connection except from localhost +echo "Denying all kind of connection except localhost : " +AddRules "ALL:ALL EXCEPT localhost:DENY" /etc/hosts.deny + +# Login as root on the console allowed : +echo "Denying login as root (except on the console) :" +AddRules "tty1" /etc/securetty quiet +AddRules "tty2" /etc/securetty quiet +AddRules "tty3" /etc/securetty quiet +AddRules "tty4" /etc/securetty quiet +AddRules "tty5" /etc/securetty quiet +AddRules "tty6" /etc/securetty +AddRules "vc/1" /etc/securetty quiet +AddRules "vc/2" /etc/securetty quiet +AddRules "vc/3" /etc/securetty quiet +AddRules "vc/4" /etc/securetty quiet +AddRules "vc/5" /etc/securetty quiet +AddRules "vc/6" /etc/securetty + +# Security check +echo "Updating file check variable : " +echo -e "\t- Check security : yes." + AddRules "CHECK_SECURITY=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check important permissions : yes." + AddRules "CHECK_PERMS=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check suid root file : yes." + AddRules "CHECK_SUID_ROOT=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check suid root file integrity (backdoor check) : yes." + AddRules "CHECK_SUID_MD5=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check suid group file : yes." + AddRules "CHECK_SUID_GROUP=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check world writable file : yes." + AddRules "CHECK_WRITEABLE=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check unowned file : yes." + AddRules "CHECK_UNOWNED=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check promiscuous mode : yes." + AddRules "CHECK_PROMISC=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check listening port : yes." + AddRules "CHECK_OPEN_PORT=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check passwd file integrity : yes." + AddRules "CHECK_PASSWD=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Check shadow file integrity : yes." + AddRules "CHECK_SHADOW=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Security warning on tty : yes." + AddRules "TTY_WARN=yes" /etc/security/msec/security.conf quiet +echo -e "\t- Security warning by mail : yes." + AddRules "MAIL_WARN=yes" /etc/security/msec/security.conf quiet + AddRules "MAIL_USER=root" /etc/security/msec/security.conf quiet +echo -e "\t- Security warning in syslog : yes." + AddRules "SYSLOG_WARN=yes" /etc/security/msec/security.conf +# end security check + +# Check every 1 minutes for promisc problem +echo "Adding promisc check in crontab (scheduled every minutes) :" +AddRules "*/1 * * * * root /usr/share/msec/promisc_check.sh" /etc/crontab + +echo "Adding \"diff\" & \"global\" security check in crontab (scheduled every midnight) :" +AddRules "0 4 * * * root /usr/share/msec/security.sh" /etc/crontab + +# Server update +echo "Setting secure level variable to snf :" +AddRules "export SECURE_LEVEL=snf" /etc/profile.d/msec.sh +AddRules "setenv SECURE_LEVEL snf" /etc/profile.d/msec.csh + + +export SECURE_LEVEL=snf + +IFS=" +" +echo -n "Disabling all service, except : {" +for service in `chkconfig --list | awk '{print $1}'`; do + if grep -qx ${service} /etc/security/msec/server.4; then + echo -n " ${service}" + fi +done +echo " } : " + +for service in `chkconfig --list | awk '{print $1}'`; do + chkconfig --del "${service}" + if ! chkconfig --msec --add "${service}"; then + echo -e "\t- Services ${service} scheduled to be disabled at next boot." + fi +done +echo -e "done.\n"; + +# /etc/profile.d/msec.{sh,csh} +echo "Setting umask to 022 (u=rw,g=rx) for root, 077 (u=rw) for user :" +AddRules "if [[ \${UID} == 0 ]]; then umask 022; else umask 077; fi" /etc/profile.d/msec.sh +AddRules "if [[ \${UID} == 0 ]]; then umask 022; else umask 077; fi" /etc/profile.d/msec.csh + +if [[ -f /lib/libsafe.so.2 ]]; then + echo "Enabling stack overflow protection :" + AddRules "/lib/libsafe.so.2" /etc/ld.so.preload +fi + +# Do not boot on a shell +ForbidReboot + +ForbidAutologin + +# Group were modified in lib.sh... +grpconv + +ForbidUserList +RootSshLogin snf |