IMP: add multiple Improvements

* add new kernel module detection (enable & listing)  with detection of monolithic kernel
* change way to detect if file system type is disabled
* add global IS_CONTAINER variable
* disable test for 3.4.x to be consistent with others
* add cli options to override configuration loglevel

MANUAL.md

@@ -115,6 +115,10 @@ will create a timestamped backup in this directory.
     the -n option instructs sudo not to prompt for a password.
     Finally note that `--sudo` mode only works for audit mode.
 
+`--set-log-level=level`
+:   This option sets LOGLEVEL, you can choose : info, warning, error, ok, debug.
+    Default value is : info
+
 `--batch`
 :   While performing system audit, this option sets LOGLEVEL to 'ok' and
     captures all output to print only one line once the check is done, formatted like :

README.md

@@ -117,6 +117,9 @@ to allow a certain kind of services on the machine, such as http, mail, etc.
 Can be specified multiple times to allow multiple services.
 Use --allow-service-list to get a list of supported services.
 
+``--set-log-level <level>``: This option sets LOGLEVEL, you can choose : info, warning, error, ok, debug.
+Default value is : info
+
 ``--create-config-files-only``: create the config files in etc/conf.d. Must be run as root,
 before running the audit with user secaudit, to have the rights setup well on the conf files.
 

bin/hardening.sh

@@ -26,6 +26,7 @@ ALLOW_SERVICE_LIST=0
 SET_HARDENING_LEVEL=0
 SUDO_MODE=''
 BATCH_MODE=''
+ASK_LOGLEVEL=''
 
 usage() {
     cat <<EOF
@@ -98,6 +99,10 @@ OPTIONS:
         the '-n' option instructs sudo not to prompt for a password.
         Finally note that '--sudo' mode only works for audit mode.
 
+    --set-log-level <level>
+        This option sets LOGLEVEL, you can choose : info, warning, error, ok, debug.
+        Default value is : info
+
     --batch
         While performing system audit, this option sets LOGLEVEL to 'ok' and
         captures all output to print only one line once the check is done, formatted like :
@@ -143,6 +148,10 @@ while [[ $# -gt 0 ]]; do
         SET_HARDENING_LEVEL="$2"
         shift
         ;;
+    --set-log-level)
+        ASK_LOGLEVEL=$2
+        shift
+        ;;
     --only)
         TEST_LIST[${#TEST_LIST[@]}]="$2"
         shift
@@ -152,7 +161,7 @@ while [[ $# -gt 0 ]]; do
         ;;
     --batch)
         BATCH_MODE='--batch'
-        LOGLEVEL=ok
+        ASK_LOGLEVEL=ok
         ;;
     -h | --help)
         usage
@@ -183,13 +192,12 @@ fi
 [ -r "$CIS_ROOT_DIR"/lib/constants.sh ] && . "$CIS_ROOT_DIR"/lib/constants.sh
 # shellcheck source=../etc/hardening.cfg
 [ -r "$CIS_ROOT_DIR"/etc/hardening.cfg ] && . "$CIS_ROOT_DIR"/etc/hardening.cfg
+if [ "$ASK_LOGLEVEL" ]; then LOGLEVEL=$ASK_LOGLEVEL; fi
 # shellcheck source=../lib/common.sh
 [ -r "$CIS_ROOT_DIR"/lib/common.sh ] && . "$CIS_ROOT_DIR"/lib/common.sh
 # shellcheck source=../lib/utils.sh
 [ -r "$CIS_ROOT_DIR"/lib/utils.sh ] && . "$CIS_ROOT_DIR"/lib/utils.sh
 
-if [ "$BATCH_MODE" ]; then MACHINE_LOG_LEVEL=3; fi
-
 # If --allow-service-list is specified, don't run anything, just list the supported services
 if [ "$ALLOW_SERVICE_LIST" = 1 ]; then
     declare -a HARDENING_EXCEPTIONS_LIST

bin/hardening/1.1.1.1_disable_freevxfs.sh

@@ -17,28 +17,36 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of freevxfs filesystems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_VXFS_FS"
 MODULE_NAME="freevxfs"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/1.1.1.2_disable_jffs2.sh

@@ -17,28 +17,36 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of jffs2 filesystems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_JFFS2_FS"
 MODULE_NAME="jffs2"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/1.1.1.3_disable_hfs.sh

@@ -17,28 +17,36 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of hfs filesystems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_HFS_FS"
-MODULE_FILE="hfs"
+MODULE_NAME="hfs"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/1.1.1.4_disable_hfsplus.sh

@@ -17,28 +17,36 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of hfsplus filesystems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_HFSPLUS_FS"
-MODULE_FILE="hfsplus"
+MODULE_NAME="hfsplus"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/1.1.1.5_disable_squashfs.sh

@@ -17,31 +17,37 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of squashfs filesytems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_SQUASHFS"
-MODULE_FILE="squashfs"
+MODULE_NAME="squashfs"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
-    :
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
-    :
 }
 
 # This function will check config parameters required

bin/hardening/1.1.1.6_disable_udf.sh

@@ -17,28 +17,36 @@ HARDENING_LEVEL=2
 # shellcheck disable=2034
 DESCRIPTION="Disable mounting of udf filesystems."
 
-# Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
-
 KERNEL_OPTION="CONFIG_UDF_FS"
-MODULE_FILE="udf"
+MODULE_NAME="udf"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/1.1.1.7_restrict_fat.sh

@@ -24,6 +24,7 @@ MODULE_FILE="vfat"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
+    # TODO check if uefi enabled if yes check if only boot partition use FAT
     is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
     if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
         crit "$KERNEL_OPTION is enabled!"

bin/hardening/1.1.23_disable_usb_storage.sh

@@ -20,25 +20,35 @@ DESCRIPTION="Disable USB storage."
 # Note: we check /proc/config.gz to be compliant with both monolithic and modular kernels
 
 KERNEL_OPTION="CONFIG_USB_STORAGE"
-MODULE_FILE="usb-storage"
+MODULE_NAME="usb-storage"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_FILE"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/3.4.1_disable_dccp.sh

@@ -24,21 +24,31 @@ MODULE_NAME="dccp"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/3.4.2_disable_sctp.sh

@@ -24,21 +24,31 @@ MODULE_NAME="sctp"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/3.4.3_disable_rds.sh

@@ -24,21 +24,31 @@ MODULE_NAME="rds"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

bin/hardening/3.4.4_disable_tipc.sh

@@ -24,21 +24,31 @@ MODULE_NAME="tipc"
 
 # This function will be called if the script status is on enabled / audit mode
 audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing or disable this check!"
     else
-        ok "$KERNEL_OPTION is disabled"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            crit "$MODULE_NAME is enabled!"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 
 # This function will be called if the script status is on enabled mode
 apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
+    if [ "$IS_CONTAINER" -eq 1 ]; then
+        # In an unprivileged container, the kernel modules are host dependent, so you should consider enforcing it
+        ok "Container detected, consider host enforcing!"
     else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
+        is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME" "($MODULE_NAME|install)"
+        if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
+            warn "I cannot fix $MODULE_NAME, recompile your kernel or blacklist module $MODULE_NAME (/etc/modprobe.d/blacklist.conf : +install $MODULE_NAME /bin/true)"
+        else
+            ok "$MODULE_NAME is disabled"
+        fi
     fi
 }
 

debian/cis-hardening.8

@@ -127,6 +127,11 @@ Note that you need to provide a sudoers file with NOPASSWD option in
 password.
 Finally note that \f[C]--sudo\f[R] mode only works for audit mode.
 .TP
+.B \f[C]--set-log-level=level\f[R]
+This option sets LOGLEVEL, you can choose : info, warning, error, ok,
+debug.
+Default value is : info
+.TP
 .B \f[C]--batch\f[R]
 While performing system audit, this option sets LOGLEVEL to `ok' and
 captures all output to print only one line once the check is done,

lib/common.sh

@@ -113,11 +113,36 @@ sudo_wrapper() {
     fi
 }
 
+#
+# detect if container based on cgroup detection
+#
+is_running_in_container() {
+    awk -F/ '$2 == "'"$1"'"' /proc/self/cgroup
+}
+
+CONTAINER_TYPE=""
+IS_CONTAINER=0
+
+if [ "$(is_running_in_container "docker")" != "" ]; then
+    CONTAINER_TYPE="docker"
+    IS_CONTAINER=1
+fi
+if [ "$(is_running_in_container "lxc")" != "" ]; then
+    CONTAINER_TYPE="lxc"
+    IS_CONTAINER=1
+fi
+if [ "$(is_running_in_container "kubepods")" != "" ]; then
+    # shellcheck disable=SC2034
+    CONTAINER_TYPE="kubepods"
+    # shellcheck disable=SC2034
+    IS_CONTAINER=1
+fi
+
 #
 # Math functions
 #
 
-function div() {
+div() {
     local _d=${3:-2}
     local _n=0000000000
     _n=${_n:0:$_d}

lib/utils.sh

@@ -295,51 +295,90 @@ is_service_enabled() {
 is_kernel_option_enabled() {
     local KERNEL_OPTION="$1"
     local MODULE_NAME=""
+    local MODPROBE_FILTER=""
     local RESULT=""
+    local IS_MONOLITHIC_KERNEL=1
+    local DEF_MODULE=""
 
     if [ $# -ge 2 ]; then
         MODULE_NAME="$2"
     fi
 
-    if $SUDO_CMD [ -r "/proc/config.gz" ]; then
-        RESULT=$($SUDO_CMD zgrep "^$KERNEL_OPTION=" /proc/config.gz) || :
-    elif $SUDO_CMD [ -r "/boot/config-$(uname -r)" ]; then
-        RESULT=$($SUDO_CMD grep "^$KERNEL_OPTION=" "/boot/config-$(uname -r)") || :
-    else
-        debug "No information about kernel found, you're probably in a container"
-        FNRET=127
-        return
+    if [ $# -ge 3 ]; then
+        MODPROBE_FILTER="$3"
     fi
 
-    ANSWER=$(cut -d = -f 2 <<<"$RESULT")
-    if [ "x$ANSWER" = "xy" ]; then
-        debug "Kernel option $KERNEL_OPTION enabled"
-        FNRET=0
-    elif [ "x$ANSWER" = "xn" ]; then
-        debug "Kernel option $KERNEL_OPTION disabled"
-        FNRET=1
-    else
-        debug "Kernel option $KERNEL_OPTION not found"
-        FNRET=2 # Not found
+    debug "Detect if lsmod is available and does not return an error code (otherwise consider as a monolithic kernel"
+    if $SUDO_CMD lsmod >/dev/null 2>&1; then
+        IS_MONOLITHIC_KERNEL=0
     fi
 
-    if $SUDO_CMD [ "$FNRET" -ne 0 ] && [ -n "$MODULE_NAME" ] && [ -d "/lib/modules/$(uname -r)" ]; then
-        # also check in modules, because even if not =y, maybe
-        # the admin compiled it separately later (or out-of-tree)
-        # as a module (regardless of the fact that we have =m or not)
-        debug "Checking if we have $MODULE_NAME.ko"
-        local modulefile
-        modulefile=$($SUDO_CMD find "/lib/modules/$(uname -r)/" -type f -name "$MODULE_NAME.ko")
-        if $SUDO_CMD [ -n "$modulefile" ]; then
-            debug "We do have $modulefile!"
-            # ... but wait, maybe it's blacklisted? check files in /etc/modprobe.d/ for "blacklist xyz"
-            if grep -qRE "^\s*blacklist\s+$MODULE_NAME\s*$" /etc/modprobe.d/; then
-                debug "... but it's blacklisted!"
-                FNRET=1 # Not found (found but blacklisted)
-                # FIXME: even if blacklisted, it might be present in the initrd and
-                # be insmod from there... but painful to check :/ maybe lsmod would be enough ?
+    if [ $IS_MONOLITHIC_KERNEL -eq 1 ]; then
+        if $SUDO_CMD [ -r "/proc/config.gz" ]; then
+            RESULT=$($SUDO_CMD zgrep "^$KERNEL_OPTION=" /proc/config.gz) || :
+        elif $SUDO_CMD [ -r "/boot/config-$(uname -r)" ]; then
+            RESULT=$($SUDO_CMD grep "^$KERNEL_OPTION=" "/boot/config-$(uname -r)") || :
+        else
+            debug "No information about kernel found, you're probably in a container"
+            FNRET=127
+            return
+        fi
+
+        ANSWER=$(cut -d = -f 2 <<<"$RESULT")
+        if [ "x$ANSWER" = "xy" ]; then
+            debug "Kernel option $KERNEL_OPTION enabled"
+            FNRET=0
+        elif [ "x$ANSWER" = "xn" ]; then
+            debug "Kernel option $KERNEL_OPTION disabled"
+            FNRET=1
+        else
+            debug "Kernel option $KERNEL_OPTION not found"
+            FNRET=2 # Not found
+        fi
+
+        if $SUDO_CMD [ "$FNRET" -ne 0 ] && [ -n "$MODULE_NAME" ] && [ -d "/lib/modules/$(uname -r)" ]; then
+            # also check in modules, because even if not =y, maybe
+            # the admin compiled it separately later (or out-of-tree)
+            # as a module (regardless of the fact that we have =m or not)
+            debug "Checking if we have $MODULE_NAME.ko"
+            local modulefile
+            modulefile=$($SUDO_CMD find "/lib/modules/$(uname -r)/" -type f -name "$MODULE_NAME.ko")
+            if $SUDO_CMD [ -n "$modulefile" ]; then
+                debug "We do have $modulefile!"
+                # ... but wait, maybe it's blacklisted? check files in /etc/modprobe.d/ for "blacklist xyz"
+                if grep -qRE "^\s*blacklist\s+$MODULE_NAME\s*$" /etc/modprobe.d/*.conf; then
+                    debug "... but it's blacklisted!"
+                    FNRET=1 # Not found (found but blacklisted)
+                fi
+                # ... but wait, maybe it's override ? check files in /etc/modprobe.d/ for "install xyz /bin/(true|false)"
+                if grep -aRE "^\s*install\s+$MODULE_NAME\s+/bin/(true|false)\s*$" /etc/modprobe.d/*.conf; then
+                    debug "... but it's override!"
+                    FNRET=1 # Not found (found but override)
+                fi
+                FNRET=0 # Found!
             fi
-            FNRET=0 # Found!
+        fi
+    else
+        if [ "$FILTER" != "" ]; then
+            DEF_MODULE="$($SUDO_CMD modprobe -n -v "$MODULE_NAME" 2>/dev/null | grep -E "$MODPROBE_FILTER" | xargs)"
+        else
+            DEF_MODULE="$($SUDO_CMD modprobe -n -v "$MODULE_NAME" 2>/dev/null | xargs)"
+        fi
+
+        if [ "$DEF_MODULE" == "install /bin/true" ] || [ "$DEF_MODULE" == "install /bin/false" ]; then
+            debug "$MODULE_NAME is disabled (blacklist with override)"
+            FNRET=1
+        elif [ "$DEF_MODULE" == "" ]; then
+            debug "$MODULE_NAME is disabled"
+            FNRET=1
+        else
+            debug "$MODULE_NAME is enabled"
+            FNRET=0
+        fi
+
+        if [ "$($SUDO_CMD lsmod | grep -E "$MODULE_NAME" 2>/dev/null)" != "" ]; then
+            debug "$MODULE_NAME is enabled"
+            FNRET=0
         fi
     fi
 }

tests/hardening/3.4.1_disable_dccp.sh

@@ -1,11 +1,15 @@
 # shellcheck shell=bash
 # run-shellcheck
 test_audit() {
-    describe Running on blank host
-    register_test retvalshouldbe 0
-    dismiss_count_for_test
-    # shellcheck disable=2154
-    run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    if [ -f "/.dockerenv" ]; then
+        skip "SKIPPED on docker"
+    else
+        describe Running on blank host
+        register_test retvalshouldbe 0
+        dismiss_count_for_test
+        # shellcheck disable=2154
+        run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    fi
 
     ##################################################################
     # For this test, we only check that it runs properly on a blank  #

tests/hardening/3.4.2_disable_sctp.sh

@@ -1,11 +1,15 @@
 # shellcheck shell=bash
 # run-shellcheck
 test_audit() {
-    describe Running on blank host
-    register_test retvalshouldbe 0
-    dismiss_count_for_test
-    # shellcheck disable=2154
-    run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    if [ -f "/.dockerenv" ]; then
+        skip "SKIPPED on docker"
+    else
+        describe Running on blank host
+        register_test retvalshouldbe 0
+        dismiss_count_for_test
+        # shellcheck disable=2154
+        run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    fi
 
     ##################################################################
     # For this test, we only check that it runs properly on a blank  #

tests/hardening/3.4.3_disable_rds.sh

@@ -1,11 +1,15 @@
 # shellcheck shell=bash
 # run-shellcheck
 test_audit() {
-    describe Running on blank host
-    register_test retvalshouldbe 0
-    dismiss_count_for_test
-    # shellcheck disable=2154
-    run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    if [ -f "/.dockerenv" ]; then
+        skip "SKIPPED on docker"
+    else
+        describe Running on blank host
+        register_test retvalshouldbe 0
+        dismiss_count_for_test
+        # shellcheck disable=2154
+        run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    fi
 
     ##################################################################
     # For this test, we only check that it runs properly on a blank  #

tests/hardening/3.4.4_disable_tipc.sh

@@ -1,11 +1,15 @@
 # shellcheck shell=bash
 # run-shellcheck
 test_audit() {
-    describe Running on blank host
-    register_test retvalshouldbe 0
-    dismiss_count_for_test
-    # shellcheck disable=2154
-    run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    if [ -f "/.dockerenv" ]; then
+        skip "SKIPPED on docker"
+    else
+        describe Running on blank host
+        register_test retvalshouldbe 0
+        dismiss_count_for_test
+        # shellcheck disable=2154
+        run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
+    fi
 
     ##################################################################
     # For this test, we only check that it runs properly on a blank  #