diff options
Diffstat (limited to 'cron-sh/diff_check.sh')
-rwxr-xr-x | cron-sh/diff_check.sh | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/cron-sh/diff_check.sh b/cron-sh/diff_check.sh deleted file mode 100755 index 4761dc2..0000000 --- a/cron-sh/diff_check.sh +++ /dev/null @@ -1,240 +0,0 @@ -#!/bin/bash -# -# Written by Vandoorselaere Yoann -# - -if [[ -f /etc/security/msec/security.conf ]]; then - . /etc/security/msec/security.conf -else - echo "/etc/security/msec/security.conf don't exist." - exit 1 -fi - -if [[ ${CHECK_SECURITY} == no ]]; then - exit 0 -fi - -SECURITY_LOG="/var/log/security.log" -TMP=`mktemp /tmp/secure.XXXXXX` - -### New Suid root files detection -if [[ ${CHECK_SUID_ROOT} == yes ]]; then - - if [[ -f ${SUID_ROOT_YESTERDAY} ]]; then - if ! diff -u ${SUID_ROOT_YESTERDAY} ${SUID_ROOT_TODAY} > ${SUID_ROOT_DIFF}; then - printf "\nSecurity Warning: Change in Suid Root files found :\n" >> ${TMP} - grep '^+' ${SUID_ROOT_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly added suid root file : ${file}\n" - done >> ${TMP} - grep '^-' ${SUID_ROOT_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present suid root file : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### New Sgid files detection -if [[ ${CHECK_SGID} == yes ]]; then - - if [[ -f ${SGID_YESTERDAY} ]]; then - if ! diff -u ${SGID_YESTERDAY} ${SGID_TODAY} > ${SGID_DIFF}; then - printf "\nSecurity Warning: Changes in Sgid files found :\n" >> ${TMP} - grep '^+' ${SGID_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly added sgid file : ${file}\n" - done >> ${TMP} - grep '^-' ${SGID_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present sgid file : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### Writable files detection -if [[ ${CHECK_WRITABLE} == yes ]]; then - - if [[ -f ${WRITABLE_YESTERDAY} ]]; then - diff -u ${WRITABLE_YESTERDAY} ${WRITABLE_TODAY} > ${WRITABLE_DIFF} - if [ -s ${WRITABLE_DIFF} ]; then - printf "\nSecurity Warning: Change in World Writable Files found :\n" >> ${TMP} - grep '^+' ${WRITABLE_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly added writable file : ${file}\n" - done >> ${TMP} - grep '^-' ${WRITABLE_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present writable file : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### Search Non Owned files -if [[ ${CHECK_UNOWNED} == yes ]]; then - - if [[ -f ${UNOWNED_USER_YESTERDAY} ]]; then - diff -u ${UNOWNED_USER_YESTERDAY} ${UNOWNED_USER_TODAY} > ${UNOWNED_USER_DIFF} - if [ -s ${UNOWNED_USER_DIFF} ]; then - printf "\nSecurity Warning: the following files aren't owned by an user :\n" >> ${TMP} - grep '^+' ${UNOWNED_USER_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly added un-owned file : ${file}\n" - done >> ${TMP} - grep '^-' ${UNOWNED_USER_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present un-owned file : ${file}\n" - done >> ${TMP} - fi - fi - - if [[ -f ${UNOWNED_GROUP_YESTERDAY} ]]; then - diff -u ${UNOWNED_GROUP_YESTERDAY} ${UNOWNED_GROUP_TODAY} > ${UNOWNED_GROUP_DIFF} - if [ -s ${UNOWNED_GROUP_DIFF} ]; then - printf "\nSecurity Warning: the following files aren't owned by a group :\n" >> ${TMP} - grep '^+' ${UNOWNED_GROUP_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly added un-owned file : ${file}\n" - done >> ${TMP} - grep '^-' ${UNOWNED_GROUP_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present un-owned file : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### Md5 check for SUID root fileg -if [[ ${CHECK_SUID_MD5} == yes ]]; then - ctrl_md5=0; - - if [[ -f ${SUID_MD5_YESTERDAY} ]]; then - diff -u ${SUID_MD5_YESTERDAY} ${SUID_MD5_TODAY} > ${SUID_MD5_DIFF} - if [ -s ${SUID_MD5_DIFF} ]; then - grep '^+' ${SUID_MD5_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | awk '{print $2}' | while read file; do - if cat ${SUID_MD5_YESTERDAY} | awk '{print $2}' | grep -qw ${file}; then - if [[ ${ctrl_md5} == 0 ]]; then - printf "\nSecurity Warning: the md5 checksum for one of your SUID files has changed,\n" >> ${TMP} - printf "\tmaybe an intruder modified one of these suid binary in order to put in a backdoor...\n" >> ${TMP} - ctrl_md5=1; - fi - printf "\t\t- Checksum changed file : ${file}\n" - fi - done >> ${TMP} - fi - fi - -fi - -### Changed open port -if [[ ${CHECK_OPEN_PORT} == yes ]]; then - - if [[ -f ${OPEN_PORT_YESTERDAY} ]]; then - diff -u ${OPEN_PORT_YESTERDAY} ${OPEN_PORT_TODAY} 1> ${OPEN_PORT_DIFF} - if [ -s ${OPEN_PORT_DIFF} ]; then - printf "\nSecurity Warning: There are modifications for port listening on your machine :\n" >> ${TMP} - grep '^+' ${OPEN_PORT_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Opened ports : ${file}\n" - done >> ${TMP} - grep '^-' ${OPEN_PORT_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Closed ports : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### Changed firewall -if [[ ${CHECK_FIREWALL} == yes ]]; then - - if [[ -f ${FIREWALL_YESTERDAY} ]]; then - diff -u ${FIREWALL_YESTERDAY} ${FIREWALL_TODAY} 1> ${FIREWALL_DIFF} - if [ -s ${FIREWALL_DIFF} ]; then - printf "\nSecurity Warning: There are modifications for firewall configuration on your machine :\n" >> ${TMP} - grep '^+' ${FIREWALL_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- New entries : ${file}\n" - done >> ${TMP} - grep '^-' ${FIREWALL_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Removed entries : ${file}\n" - done >> ${TMP} - fi - fi - -fi - -### rpm database -if [[ ${CHECK_RPM} == yes ]]; then - if [[ -f ${RPM_QA_YESTERDAY} ]]; then - diff -u ${RPM_QA_YESTERDAY} ${RPM_QA_TODAY} > ${RPM_QA_DIFF} - if [ -s ${RPM_QA_DIFF} ]; then - printf "\nSecurity Warning: These packages have changed on the system :\n" >> ${TMP} - grep '^+' ${RPM_QA_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly installed package : ${file}\n" - done >> ${TMP} - grep '^-' ${RPM_QA_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer present package : ${file}\n" - done >> ${TMP} - fi - fi - if [[ -f ${RPM_VA_YESTERDAY} ]]; then - diff -u ${RPM_VA_YESTERDAY} ${RPM_VA_TODAY} > ${RPM_VA_DIFF} - if [ -s ${RPM_VA_DIFF} ]; then - printf "\nSecurity Warning: These files belonging to packages have changed of status on the system :\n" >> ${TMP} - grep '^+' ${RPM_VA_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly modified : ${file}\n" - done >> ${TMP} - grep '^-' ${RPM_VA_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer modified : ${file}\n" - done >> ${TMP} - fi - fi - if [[ -f ${RPM_VA_CONFIG_YESTERDAY} ]]; then - diff -u ${RPM_VA_CONFIG_YESTERDAY} ${RPM_VA_CONFIG_TODAY} > ${RPM_VA_CONFIG_DIFF} - if [ -s ${RPM_VA_CONFIG_DIFF} ]; then - printf "\nSecurity Warning: These config files belonging to packages have changed of status on the system :\n" >> ${TMP} - grep '^+' ${RPM_VA_CONFIG_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Newly modified : ${file}\n" - done >> ${TMP} - grep '^-' ${RPM_VA_CONFIG_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- No longer modified : ${file}\n" - done >> ${TMP} - fi - fi -fi - -### Changed chkrootkit -if [[ ${CHECK_CHKROOTKIT} == yes ]]; then - - if [[ -f ${CHKROOTKIT_YESTERDAY} ]]; then - diff -u ${CHKROOTKIT_YESTERDAY} ${CHKROOTKIT_TODAY} 1> ${CHKROOTKIT_DIFF} - if [ -s ${CHKROOTKIT_DIFF} ]; then - printf "\nSecurity Warning: There are modifications for chkrootkit results :\n" >> ${TMP} - grep '^+' ${CHKROOTKIT_DIFF} | grep -vw "^+++ " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Added : ${file}\n" - done >> ${TMP} - grep '^-' ${CHKROOTKIT_DIFF} | grep -vw "^--- " | sed 's|^.||'|sed -e 's/%/%%/g' | while read file; do - printf "\t\t- Removed : ${file}\n" - done >> ${TMP} - fi - fi -fi - - -######## Report ###### -date=`date` -hostname=`hostname` - -if [[ -s ${TMP} ]]; then - Syslog ${TMP} - Ttylog ${TMP} - - echo -e "\n\n*** Diff Check, ${date} ***\n" >> ${SECURITY_LOG} - cat ${TMP} >> ${SECURITY_LOG} - - Notifylog "MSEC has performed Diff Check on ${hostname} on ${date}. Changes in system security were detected and are available in ${SECURITY_LOG}." -else - Notifylog "MSEC has performed Diff Check on ${hostname} on ${date}. No changes were detected in system security." -fi - -Maillog "[msec] *** Diff Check on ${hostname}, ${date} ***" "${TMP}" - -if [[ -f ${TMP} ]]; then - rm -f ${TMP} -fi - |