diff options
Diffstat (limited to 'cron-sh/scripts/01_files.sh')
| -rwxr-xr-x | cron-sh/scripts/01_files.sh | 157 |
1 files changed, 39 insertions, 118 deletions
diff --git a/cron-sh/scripts/01_files.sh b/cron-sh/scripts/01_files.sh index dc20bd0..a38a874 100755 --- a/cron-sh/scripts/01_files.sh +++ b/cron-sh/scripts/01_files.sh @@ -94,139 +94,60 @@ fi ### 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" >> ${DIFF} - 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 >> ${DIFF} - 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 >> ${DIFF} - fi - fi - + Diffcheck ${SUID_ROOT_TODAY} ${SUID_ROOT_YESTERDAY} ${SUID_ROOT_DIFF} "Suid Root files" 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" >> ${DIFF} - 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 >> ${DIFF} - 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 >> ${DIFF} - fi - fi - + Diffcheck ${SGID_TODAY} ${SGID_YESTERDAY} ${SGID_DIFF} "Sgid files" 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" >> ${DIFF} - 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 >> ${DIFF} - 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 >> ${DIFF} - fi - fi - + Diffcheck ${WRITABLE_TODAY} ${WRITABLE_YESTERDAY} ${WRITABLE_DIFF} "World Writable files" 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" >> ${DIFF} - 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 >> ${DIFF} - 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 >> ${DIFF} - 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" >> ${DIFF} - 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 >> ${DIFF} - 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 >> ${DIFF} - fi - fi - + Diffcheck ${UNOWNED_USER_TODAY} ${UNOWNED_USER_YESTERDAY} ${UNOWNED_USER_DIFF} "Un-owned files" + Diffcheck ${UNOWNED_GROUP_TODAY} ${UNOWNED_GROUP_YESTERDAY} ${UNOWNED_GROUP_DIFF} "Un-owned group files" 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" >> ${DIFF} - printf "\tmaybe an intruder modified one of these suid binary in order to put in a backdoor...\n" >> ${DIFF} - ctrl_md5=1; - fi - printf "\t\t- Checksum changed file : ${file}\n" - fi - done >> ${DIFF} - fi - fi - + Diffcheck ${SUID_MD5_TODAY} ${SUID_MD5_YESTERDAY} ${SUID_MD5_DIFF} "SUID files MD5 checksum" fi ### Writable file detection if [[ ${CHECK_WRITABLE} == yes ]]; then if [[ -s ${WRITABLE_TODAY} ]]; then - printf "\nSecurity Warning: World Writable files found :\n" >> ${SECURITY} - cat ${WRITABLE_TODAY} | awk '{print "\t\t- " $0}' >> ${SECURITY} + printf "\nSecurity Warning: World Writable files found :\n" >> ${SECURITY} + cat ${WRITABLE_TODAY} | awk '{print "\t\t- " $0}' >> ${SECURITY} fi fi ### Search Un Owned file if [[ ${CHECK_UNOWNED} == yes ]]; then if [[ -s ${UNOWNED_USER_TODAY} ]]; then - printf "\nSecurity Warning : User Unowned files found :\n" >> ${SECURITY} - printf "\t( theses files now have user \"nobody\" as their owner. )\n" >> ${SECURITY} - cat ${UNOWNED_USER_TODAY} | awk '{print "\t\t- " $0}' >> ${SECURITY} + printf "\nSecurity Warning : User Unowned files found :\n" >> ${SECURITY} + printf "\t( theses files now have user \"nobody\" as their owner. )\n" >> ${SECURITY} + cat ${UNOWNED_USER_TODAY} >> ${SECURITY} cat ${UNOWNED_USER_TODAY} | while read line; do - if [[ ${FIX_UNOWNED} == yes ]]; then - chown nobody "${line}"; # Use quote if filename contain space. - fi - done + if [[ ${FIX_UNOWNED} == yes ]]; then + chown nobody "${line}"; # Use quote if filename contain space. + fi + done fi if [[ -s ${UNOWNED_GROUP_TODAY} ]]; then - printf "\nSecurity Warning : Group Unowned files found :\n" >> ${SECURITY} + printf "\nSecurity Warning : Group Unowned files found :\n" >> ${SECURITY} printf "\t( theses files now have group \"nogroup\" as their group owner. )\n" >> ${SECURITY} - cat ${UNOWNED_GROUP_TODAY} | awk '{print "\t\t- " $0}' >> ${SECURITY} - cat ${UNOWNED_GROUP_TODAY} | while read line; do - if [[ ${FIX_UNOWNED} == yes ]]; then - chgrp nogroup "${line}"; # Use quote if filename contain space. - fi - done + cat ${UNOWNED_GROUP_TODAY} >> ${SECURITY} + cat ${UNOWNED_GROUP_TODAY} | while read line; do + if [[ ${FIX_UNOWNED} == yes ]]; then + chgrp nogroup "${line}"; # Use quote if filename contain space. + fi + done fi fi @@ -237,23 +158,23 @@ list=".netrc .rhosts .shosts .Xauthority .gnupg/secring.gpg \ getent passwd | awk -F: '/^[^+-]/ { print $1 ":" $3 ":" $6 }' | while IFS=: read username uid homedir; do if ! expr "$homedir" : "$FILTER" > /dev/null; then - for f in ${list} ; do - file="${homedir}/${f}" - if [[ -f "${file}" ]] ; then - res=`ls -LldcGn "${file}" | sed 's/ \{1,\}/:/g'` - printf "${uid}:${username}:${file}:${res}\n" - fi - done + for f in ${list} ; do + file="${homedir}/${f}" + if [[ -f "${file}" ]] ; then + res=`ls -LldcGn "${file}" | sed 's/ \{1,\}/:/g'` + printf "${uid}:${username}:${file}:${res}\n" + fi + done fi done | awk -F: '$1 != $6 && $6 != "0" \ { print "\t\t- " $3 " : file is owned by uid " $6 "." } - $4 ~ /^-...r/ \ + $4 ~ /^-...r/ \ { print "\t\t- " $3 " : file is group readable." } - $4 ~ /^-......r/ \ + $4 ~ /^-......r/ \ { print "\t\t- " $3 " : file is other readable." } - $4 ~ /^-....w/ \ + $4 ~ /^-....w/ \ { print "\t\t- " $3 " : file is group writable." } - $4 ~ /^-.......w/ \ + $4 ~ /^-.......w/ \ { print "\t\t- " $3 " : file is other writable." }' > ${MSEC_TMP} if [[ -s ${MSEC_TMP} ]]; then @@ -271,12 +192,12 @@ list=".bashrc .bash_profile .bash_login .bash_logout .cshrc .emacs .exrc \ getent passwd | awk -F: '/^[^+-]/ { print $1 ":" $3 ":" $6 }' | \ while IFS=: read username uid homedir; do if ! expr "$homedir" : "$FILTER" > /dev/null; then - for f in ${list} ; do - file="${homedir}/${f}" - if [[ -e "${file}" ]] ; then - res=`ls -LldcGn "${file}" | sed 's/ \{1,\}/:/g'` - printf "${uid}:${username}:${file}:${res}\n" - fi + for f in ${list} ; do + file="${homedir}/${f}" + if [[ -e "${file}" ]] ; then + res=`ls -LldcGn "${file}" | sed 's/ \{1,\}/:/g'` + printf "${uid}:${username}:${file}:${res}\n" + fi done fi done | awk -F: '$1 != $6 && $6 != "0" \ |