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4 changed files with 48 additions and 28 deletions

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@ -319,7 +319,10 @@ fi
for SCRIPT in $(find "${CIS_CHECKS_DIR}"/ -name "*.sh" | sort -V); do for SCRIPT in $(find "${CIS_CHECKS_DIR}"/ -name "*.sh" | sort -V); do
if [ "${#TEST_LIST[@]}" -gt 0 ]; then if [ "${#TEST_LIST[@]}" -gt 0 ]; then
# --only X has been specified at least once, is this script in my list ? # --only X has been specified at least once, is this script in my list ?
if ! grep -qE "$(basename "$SCRIPT")" <<<"${TEST_LIST[@]}"; then SCRIPT_PREFIX=$(grep -Eo '^[0-9.]+' <<<"$(basename "$SCRIPT")")
# shellcheck disable=SC2001
SCRIPT_PREFIX_RE=$(sed -e 's/\./\\./g' <<<"$SCRIPT_PREFIX")
if ! grep -qE "(^|[[:space:]])$SCRIPT_PREFIX_RE([[:space:]]|$)" <<<"${TEST_LIST[@]}"; then
# not in the list # not in the list
continue continue
fi fi

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@ -17,48 +17,64 @@ HARDENING_LEVEL=4
# shellcheck disable=2034 # shellcheck disable=2034
DESCRIPTION="Record events that modify the system's mandatory access controls (MAC)." DESCRIPTION="Record events that modify the system's mandatory access controls (MAC)."
AUDIT_PARAMS=("-w /etc/apparmor/ -p wa -k MAC-policy" "-w /etc/apparmor.d/ -p wa -k MAC-policy") AUDIT_PARAMS='-w /etc/selinux/ -p wa -k MAC-policy'
AUDIT_FILE='/etc/audit/audit.rules' FILES_TO_SEARCH='/etc/audit/audit.rules /etc/audit/rules.d/audit.rules'
ADDITIONAL_PATH="/etc/audit/rules.d" FILE='/etc/audit/rules.d/audit.rules'
FILE_TO_WRITE='/etc/audit/rules.d/audit.rules'
# This function will be called if the script status is on enabled / audit mode # This function will be called if the script status is on enabled / audit mode
audit() { audit() {
MISSING_PARAMS=() # define custom IFS and save default one
index=0 d_IFS=$IFS
# use find here in order to simplify test usage with sudo using secaudit user c_IFS=$'\n'
FILES_TO_SEARCH="$(sudo_wrapper find $ADDITIONAL_PATH -name '*.rules' | paste -s) $AUDIT_FILE" IFS=$c_IFS
for i in "${!AUDIT_PARAMS[@]}"; do for AUDIT_VALUE in $AUDIT_PARAMS; do
debug "${AUDIT_PARAMS[i]} should be in file $FILES_TO_SEARCH" debug "$AUDIT_VALUE should be in file $FILES_TO_SEARCH"
IFS=$d_IFS
SEARCH_RES=0 SEARCH_RES=0
for FILE_SEARCHED in $FILES_TO_SEARCH; do for FILE_SEARCHED in $FILES_TO_SEARCH; do
does_pattern_exist_in_file "$FILE_SEARCHED" "${AUDIT_PARAMS[i]}" does_pattern_exist_in_file "$FILE_SEARCHED" "$AUDIT_VALUE"
IFS=$c_IFS
if [ "$FNRET" != 0 ]; then if [ "$FNRET" != 0 ]; then
debug "${AUDIT_PARAMS[i]} is not in file $FILE_SEARCHED" debug "$AUDIT_VALUE is not in file $FILE_SEARCHED"
else else
ok "${AUDIT_PARAMS[i]} is present in $FILE_SEARCHED" ok "$AUDIT_VALUE is present in $FILE_SEARCHED"
SEARCH_RES=1 SEARCH_RES=1
fi fi
done done
if [ "$SEARCH_RES" = 0 ]; then if [ "$SEARCH_RES" = 0 ]; then
crit "${AUDIT_PARAMS[i]} is not present in $FILES_TO_SEARCH" crit "$AUDIT_VALUE is not present in $FILES_TO_SEARCH"
MISSING_PARAMS[i]="${AUDIT_PARAMS[i]}"
index=$((index + 1))
fi fi
done done
IFS=$d_IFS
} }
# This function will be called if the script status is on enabled mode # This function will be called if the script status is on enabled mode
apply() { apply() {
audit # define custom IFS and save default one
changes=0 d_IFS=$IFS
for i in "${!MISSING_PARAMS[@]}"; do c_IFS=$'\n'
info "${MISSING_PARAMS[i]} is not present in $FILES_TO_SEARCH, adding it" IFS=$c_IFS
add_end_of_file "$FILE_TO_WRITE" "${MISSING_PARAMS[i]}" for AUDIT_VALUE in $AUDIT_PARAMS; do
changes=1 debug "$AUDIT_VALUE should be in file $FILES_TO_SEARCH"
IFS=$d_IFS
SEARCH_RES=0
for FILE_SEARCHED in $FILES_TO_SEARCH; do
does_pattern_exist_in_file "$FILE_SEARCHED" "$AUDIT_VALUE"
IFS=$c_IFS
if [ "$FNRET" != 0 ]; then
debug "$AUDIT_VALUE is not in file $FILE_SEARCHED"
else
ok "$AUDIT_VALUE is present in $FILE_SEARCHED"
SEARCH_RES=1
fi
done
if [ "$SEARCH_RES" = 0 ]; then
warn "$AUDIT_VALUE is not present in $FILES_TO_SEARCH, adding it to $FILE"
add_end_of_file "$FILE" "$AUDIT_VALUE"
eval "$(pkill -HUP -P 1 auditd)"
fi
done done
IFS=$d_IFS
[ "$changes" -eq 0 ] || eval "$(pkill -HUP -P 1 auditd)"
} }
# This function will check config parameters required # This function will check config parameters required

2
debian/control vendored
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@ -10,7 +10,7 @@ Vcs-Browser: https://github.com/ovh/debian-cis/
Package: cis-hardening Package: cis-hardening
Architecture: all Architecture: all
Depends: ${misc:Depends}, patch, coreutils Depends: ${misc:Depends}, patch
Description: Suite of configurable scripts to audit or harden a Debian. Description: Suite of configurable scripts to audit or harden a Debian.
Modular Debian security hardening scripts based on cisecurity.org Modular Debian security hardening scripts based on cisecurity.org
⟨cisecurity.org⟩ recommendations. We use it at OVH ⟨https://www.ovh.com⟩ to ⟨cisecurity.org⟩ recommendations. We use it at OVH ⟨https://www.ovh.com⟩ to

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@ -2,7 +2,8 @@
# run-shellcheck # run-shellcheck
test_audit() { test_audit() {
describe Running on blank host describe Running on blank host
register_test retvalshouldbe 1 register_test retvalshouldbe 0
dismiss_count_for_test
# shellcheck disable=2154 # shellcheck disable=2154
run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
@ -12,6 +13,6 @@ test_audit() {
describe Checking resolved state describe Checking resolved state
register_test retvalshouldbe 0 register_test retvalshouldbe 0
register_test contain "[ OK ] -w /etc/apparmor/ -p wa -k MAC-policy is present in /etc/audit/rules.d/audit.rules" register_test contain "[ OK ] -w /etc/selinux/ -p wa -k MAC-policy is present in /etc/audit/rules.d/audit.rules"
run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
} }