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https://github.com/ovh/debian-cis.git
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32886d3a3d
* Replace CIS_ROOT_DIR by a more flexible system * Try to adapt the logic change to the functional tests
132 lines
4.5 KiB
Bash
Executable File
132 lines
4.5 KiB
Bash
Executable File
#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# 6.2.8 Ensure users' home directories permissions are 750 or more restrictive (Scored
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Check permissions on user home directories."
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ERRORS=0
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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for dir in $(get_db passwd | grep -Ev '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
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debug "Working on $dir"
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debug "Exceptions : $EXCEPTIONS"
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debug "echo \"$EXCEPTIONS\" | grep -q $dir"
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if echo "$EXCEPTIONS" | grep -q "$dir"; then
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debug "$dir is confirmed as an exception"
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# shellcheck disable=SC2001
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RESULT=$(sed "s!$dir!!" <<<"$RESULT")
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else
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debug "$dir not found in exceptions"
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fi
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if [ -d "$dir" ]; then
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dirperm=$(/bin/ls -ld "$dir" | cut -f1 -d" ")
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if [ "$(echo "$dirperm" | cut -c6)" != "-" ]; then
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crit "Group Write permission set on directory $dir"
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ERRORS=$((ERRORS + 1))
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fi
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if [ "$(echo "$dirperm" | cut -c8)" != "-" ]; then
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crit "Other Read permission set on directory $dir"
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ERRORS=$((ERRORS + 1))
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fi
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if [ "$(echo "$dirperm" | cut -c9)" != "-" ]; then
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crit "Other Write permission set on directory $dir"
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ERRORS=$((ERRORS + 1))
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fi
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if [ "$(echo "$dirperm" | cut -c10)" != "-" ]; then
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crit "Other Execute permission set on directory $dir"
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ERRORS=$((ERRORS + 1))
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fi
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fi
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done
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if [ "$ERRORS" = 0 ]; then
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ok "No incorrect permissions on home directories"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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for dir in $(get_db passwd | grep -Ev '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
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debug "Working on $dir"
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debug "Exceptions : $EXCEPTIONS"
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debug "echo \"$EXCEPTIONS\" | grep -q $dir"
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if echo "$EXCEPTIONS" | grep -q "$dir"; then
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debug "$dir is confirmed as an exception"
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# shellcheck disable=SC2001
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RESULT=$(sed "s!$dir!!" <<<"$RESULT")
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else
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debug "$dir not found in exceptions"
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fi
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if [ -d "$dir" ]; then
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dirperm=$(/bin/ls -ld "$dir" | cut -f1 -d" ")
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if [ "$(echo "$dirperm" | cut -c6)" != "-" ]; then
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warn "Group Write permission set on directory $dir"
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chmod g-w "$dir"
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fi
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if [ "$(echo "$dirperm" | cut -c8)" != "-" ]; then
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warn "Other Read permission set on directory $dir"
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chmod o-r "$dir"
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fi
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if [ "$(echo "$dirperm" | cut -c9)" != "-" ]; then
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warn "Other Write permission set on directory $dir"
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chmod o-w "$dir"
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fi
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if [ "$(echo "$dirperm" | cut -c10)" != "-" ]; then
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warn "Other Execute permission set on directory $dir"
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chmod o-x "$dir"
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fi
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fi
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done
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}
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# This function will create the config file for this check with default values
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create_config() {
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cat <<EOF
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status=audit
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# Put here user home directories exceptions, separated by spaces
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EXCEPTIONS=""
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EOF
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}
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# This function will check config parameters required
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check_config() {
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if [ -z "$EXCEPTIONS" ]; then
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EXCEPTIONS="@"
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fi
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_LIB_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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