mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-04 10:19:26 +00:00
Factor out code across various /etc/periodic/security scripts into a
separate file, /etc/periodic/security/security.functions. Reviewed by: roberto (mentor) Approved by: re@
This commit is contained in:
Thomas Quinot
parent
4288a55ca2
commit
cb9eff8a9e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=105936
@ -35,12 +35,12 @@ then
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source_periodic_confs
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fi
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LOG="${daily_status_security_logdir}"
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. /etc/periodic/security/security.functions
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rc=0
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case "$daily_status_security_chksetuid_enable" in
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[Yy][Ee][Ss])
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TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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echo ""
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echo 'Checking setuid files and devices:'
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# XXX Note that there is the possibility of overrunning the args to ls
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@ -54,24 +54,10 @@ case "$daily_status_security_chksetuid_enable" in
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find $mount -xdev -type f \
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\( -perm -u+x -or -perm -g+x -or -perm -o+x \) \
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\( -perm -u+s -or -perm -g+s \) -print0
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done | xargs -0 -n 20 ls -liTd | sed 's/^ *//' | sort -k 11 > ${TMP}
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fi
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if [ ! -f ${LOG}/setuid.today ]; then
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rc=1
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echo "No ${LOG}/setuid.today"
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cp ${TMP} ${LOG}/setuid.today || rc=3
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fi
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if ! cmp ${LOG}/setuid.today ${TMP} >/dev/null
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then
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[ $rc -lt 1 ] && rc=1
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echo "${host} setuid diffs:"
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diff -b ${LOG}/setuid.today ${TMP}
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mv ${LOG}/setuid.today ${LOG}/setuid.yesterday || rc=3
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mv ${TMP} ${LOG}/setuid.today || rc=3
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fi
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rm -f ${TMP};;
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done | xargs -0 -n 20 ls -liTd | sed 's/^ *//' | sort -k 11 |
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check_diff setuid - "${host} setuid diffs:"
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rc=$?
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fi;;
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*) rc=0;;
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esac
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@ -38,35 +38,21 @@ then
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source_periodic_confs
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fi
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LOG="${daily_status_security_logdir}"
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. /etc/periodic/security/security.functions
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ignore="${daily_status_security_chkmounts_ignore}"
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rc=0
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case "$daily_status_security_chkmounts_enable" in
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[Yy][Ee][Ss])
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TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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case "$daily_status_security_noamd" in
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[Yy][Ee][Ss])
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ignore="${ignore}|^amd:"
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esac
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[ -n "$ignore" ] && cmd="egrep -v ${ignore#|}" || cmd=cat
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if mount -p | ${cmd} > ${TMP}; then
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if [ ! -f ${LOG}/mount.today ]; then
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rc=1
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echo ""
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echo "No ${LOG}/mount.today"
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cp ${TMP} ${LOG}/mount.today || rc=3
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fi
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if ! cmp ${LOG}/mount.today ${TMP} >/dev/null 2>&1; then
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[ $rc -lt 1 ] && rc=1
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echo ""
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echo "${host} changes in mounted filesystems:"
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diff -b ${LOG}/mount.today ${TMP}
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mv ${LOG}/mount.today ${LOG}/mount.yesterday || rc=3
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mv ${TMP} ${LOG}/mount.today || rc=3
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fi
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fi
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rm -f ${TMP};;
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mount -p | ${cmd} |
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check_diff mount - "${host} changes in mounted filesystems:"
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rc=$?;;
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*) rc=0;;
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esac
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@ -27,10 +27,6 @@
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# $FreeBSD$
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#
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# Show denied packets
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#
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# If there is a global system configuration file, suck it in.
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#
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if [ -r /etc/defaults/periodic.conf ]
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@ -39,29 +35,17 @@ then
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source_periodic_confs
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fi
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LOG="${daily_status_security_logdir}"
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. /etc/periodic/security/security.functions
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rc=0
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case "$daily_status_security_ipfwdenied_enable" in
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[Yy][Ee][Ss])
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TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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if ipfw -a l 2>/dev/null | egrep "deny|reset|unreach" > ${TMP}; then
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if [ ! -f ${LOG}/ipfw.today ]; then
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rc=1
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echo ""
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echo "No ${LOG}/ipfw.today"
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cp ${TMP} ${LOG}/ipfw.today || rc=3
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fi
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if ! cmp ${LOG}/ipfw.today ${TMP} >/dev/null; then
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[ $rc -lt 1 ] && rc=1
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echo ""
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echo "${host} denied packets:"
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diff -b ${LOG}/ipfw.today ${TMP} | egrep "^>"
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mv ${LOG}/ipfw.today ${LOG}/ipfw.yesterday || rc=3
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mv ${TMP} ${LOG}/ipfw.today || rc=3
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fi
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check_diff new_only ipfw ${TMP} "${host} ipfw denied packets:"
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fi
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rc=$?
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rm -f ${TMP};;
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*) rc=0;;
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esac
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@ -27,9 +27,6 @@
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# $FreeBSD$
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#
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# Show IPv6 denied packets
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#
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# If there is a global system configuration file, suck it in.
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#
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if [ -r /etc/defaults/periodic.conf ]
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@ -38,30 +35,17 @@ then
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source_periodic_confs
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fi
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LOG="${daily_status_security_logdir}"
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. /etc/periodic/security/security.functions
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rc=0
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case "$daily_status_security_ip6fwdenied_enable" in
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[Yy][Ee][Ss])
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TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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if ip6fw -a l 2>/dev/null | egrep "deny|reset|unreach" > ${TMP}; then
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if [ ! -f ${LOG}/ip6fw.today ]; then
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rc=1
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echo ""
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echo "No ${LOG}/ip6fw.today"
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cp ${TMP} ${LOG}/ip6fw.today || rc=3
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fi
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if ! cmp ${LOG}/ip6fw.today ${TMP} >/dev/null; then
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[ $rc -lt 1 ] && rc=1
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echo ""
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echo "${host} IPv6 denied packets:"
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diff -b ${LOG}/ip6fw.today ${TMP} |
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egrep "^>"
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mv ${LOG}/ip6fw.today ${LOG}/ip6fw.yesterday || rc=3
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mv ${TMP} ${LOG}/ip6fw.today || rc=3
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fi
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check_diff new_only ip6fw ${TMP} "${host} ip6fw denied packets:"
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fi
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rc=$?
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rm -f ${TMP};;
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*) rc=0;;
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esac
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@ -38,30 +38,15 @@ then
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source_periodic_confs
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fi
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LOG="${daily_status_security_logdir}"
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. /etc/periodic/security/security.functions
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rc=0
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case "$daily_status_security_kernelmsg_enable" in
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[Yy][Ee][Ss])
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TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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if dmesg 2>/dev/null > ${TMP}; then
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if [ ! -f ${LOG}/dmesg.today ]; then
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rc=1
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echo ""
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echo "No ${LOG}/dmesg.today"
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cp ${TMP} ${LOG}/dmesg.today || rc=3
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fi
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echo ""
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echo "${host} kernel log messages:"
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if ! cmp ${LOG}/dmesg.today ${TMP} >/dev/null 2>&1; then
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[ $rc -lt 1 ] && rc=1
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diff -b ${LOG}/dmesg.today ${TMP} | egrep "^>"
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mv ${LOG}/dmesg.today ${LOG}/dmesg.yesterday || rc=3
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mv ${TMP} ${LOG}/dmesg.today || rc=3
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fi
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fi
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rm -f ${TMP};;
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dmesg 2>/dev/null > ${TMP} |
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check_diff new_only dmesg - "${host} kernel log messages:"
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rc=$?;;
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*) rc=0;;
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esac
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77
etc/periodic/security/security.functions
Normal file
77
etc/periodic/security/security.functions
Normal file
@ -0,0 +1,77 @@
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#!/bin/sh
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#
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# Copyright (c) 2001 The FreeBSD Project
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#
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# Show differences in the output of an audit command
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#
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LOG="${daily_status_security_logdir}"
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rc=0
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# Usage: COMMAND | check_diff [new_only] LABEL - MSG
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# COMMAND > TMPFILE; check_diff [new_only] LABEL TMPFILE MSG
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# if $1 is new_only, show only the 'new' part of the diff.
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# LABEL is the base name of the ${LOG}/${label}.{today,yesterday} files.
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check_diff() {
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rc=0
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if [ "$1" = "new_only" ]; then
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shift
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filter="grep '^>'"
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else
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filter="cat"
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fi
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label="$1"; shift
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tmpf="$1"; shift
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msg="$1"; shift
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if [ "${tmpf}" = "-" ]; then
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tmpf=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
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cat > ${tmpf}
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fi
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if [ ! -f ${LOG}/${label}.today ]; then
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rc=1
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echo ""
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echo "No ${LOG}/${label}.today"
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cp ${tmpf} ${LOG}/${label}.today || rc=3
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fi
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if ! cmp ${LOG}/${label}.today ${tmpf} >/dev/null; then
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[ $rc -lt 1 ] && rc=1
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echo ""
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echo "${msg}"
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diff -b ${LOG}/${label}.today ${tmpf} | eval "${filter}"
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mv ${LOG}/${label}.today ${LOG}/${label}.yesterday || rc=3
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mv ${tmpf} ${LOG}/${label}.today || rc=3
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fi
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rm -f ${tmpf}
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exit ${rc}
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}
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