Add option to bsdinstall to disable insecure console, update stack guard option
This patch adds new bsdinstall option to hardening section that allows users to change this behaviour to secure one and updates stack guard option so it would set the value of relevant sysctl to 512 (2MB) Submitted by: Bartek Rutkowski Reviewed by: adrian, bapt, emaste Approved by: bapt, emaste MFC after: 1 day Sponsored by: Pixeware LTD Differential Revision: https://reviews.freebsd.org/D9700
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=320674
@ -35,6 +35,11 @@ rm $BSDINSTALL_TMPETC/rc.conf.*
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cat $BSDINSTALL_CHROOT/etc/sysctl.conf $BSDINSTALL_TMPETC/sysctl.conf.* >> $BSDINSTALL_TMPETC/sysctl.conf
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rm $BSDINSTALL_TMPETC/sysctl.conf.*
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if [ -f $BSDINSTALL_TMPTEC/ttys.hardening ]; then
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cat $BSDINSTALL_TMPTEC/ttys.hardening > $BSDINSTALL_TMPTEC/ttys
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rm $BSDINSTALL_TMPTEC/ttys.hardening
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fi
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cp $BSDINSTALL_TMPETC/* $BSDINSTALL_CHROOT/etc
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cat $BSDINSTALL_TMPBOOT/loader.conf.* >> $BSDINSTALL_TMPBOOT/loader.conf
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@ -42,10 +42,11 @@ FEATURES=$( dialog --backtitle "FreeBSD Installer" \
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"3 read_msgbuf" "Disable reading kernel message buffer for unprivileged users" ${read_msgbuf:-off} \
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"4 proc_debug" "Disable process debugging facilities for unprivileged users" ${proc_debug:-off} \
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"5 random_pid" "Randomize the PID of newly created processes" ${random_pid:-off} \
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"6 stack_guard" "Insert stack guard page ahead of the growable segments" ${stack_guard:-off} \
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"6 stack_guard" "Set stack guard buffer size to 2MB" ${stack_guard:-off} \
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"7 clear_tmp" "Clean the /tmp filesystem on system startup" ${clear_tmp:-off} \
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"8 disable_syslogd" "Disable opening Syslogd network socket (disables remote logging)" ${disable_syslogd:-off} \
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"9 disable_sendmail" "Disable Sendmail service" ${disable_sendmail:-off} \
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"9 secure_console" "Enable console password prompt" ${secure_console:-off} \
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2>&1 1>&3 )
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exec 3>&-
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@ -69,7 +70,7 @@ for feature in $FEATURES; do
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echo kern.randompid=$(jot -r 1 9999) >> $BSDINSTALL_TMPETC/sysctl.conf.hardening
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fi
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if [ "$feature" = "stack_guard" ]; then
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echo security.bsd.stack_guard_page=1 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening
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echo security.bsd.stack_guard_page=512 >> $BSDINSTALL_TMPETC/sysctl.conf.hardening
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fi
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if [ "$feature" = "clear_tmp" ]; then
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echo 'clear_tmp_enable="YES"' >> $BSDINSTALL_TMPETC/rc.conf.hardening
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@ -80,5 +81,8 @@ for feature in $FEATURES; do
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if [ "$feature" = "disable_sendmail" ]; then
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echo 'sendmail_enable="NONE"' >> $BSDINSTALL_TMPETC/rc.conf.hardening
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fi
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if [ "$feature" = "secure_console" ]; then
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sed "s/unknown off secure/unknown off insecure/g" $BSDINSTALL_CHROOT/etc/ttys > $BSDINSTALL_TMPETC/ttys.hardening
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fi
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done
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