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440aeaf45f
modified: bin/hardening/12.4_etc_passwd_ownership.sh modified: bin/hardening/12.5_etc_shadow_ownership.sh modified: bin/hardening/12.6_etc_group_ownership.sh renamed: bin/hardening/12.7_find_world_writable_file.sh -> bin/hardening/6.1.10_find_world_writable_file.sh renamed: bin/hardening/12.8_find_unowned_files.sh -> bin/hardening/6.1.11_find_unowned_files.sh renamed: bin/hardening/12.9_find_ungrouped_files.sh -> bin/hardening/6.1.12_find_ungrouped_files.sh renamed: bin/hardening/12.10_find_suid_files.sh -> bin/hardening/6.1.13_find_suid_files.sh renamed: bin/hardening/12.11_find_sgid_files.sh -> bin/hardening/6.1.14_find_sgid_files.sh renamed: bin/hardening/12.1_etc_passwd_permissions.sh -> bin/hardening/6.1.2_etc_passwd_permissions.sh renamed: bin/hardening/12.2_etc_shadow_permissions.sh -> bin/hardening/6.1.3_etc_shadow_permissions.sh renamed: bin/hardening/12.3_etc_group_permissions.sh -> bin/hardening/6.1.4_etc_group_permissions.sh deleted: tests/hardening/12.1_etc_passwd_permissions.sh deleted: tests/hardening/12.2_etc_shadow_permissions.sh deleted: tests/hardening/12.3_etc_group_permissions.sh renamed: tests/hardening/12.7_find_world_writable_file.sh -> tests/hardening/6.1.10_find_world_writable_file.sh renamed: tests/hardening/12.8_find_unowned_files.sh -> tests/hardening/6.1.11_find_unowned_files.sh renamed: tests/hardening/12.9_find_ungrouped_files.sh -> tests/hardening/6.1.12_find_ungrouped_files.sh renamed: tests/hardening/12.10_find_suid_files.sh -> tests/hardening/6.1.13_find_suid_files.sh renamed: tests/hardening/12.11_find_sgid_files.sh -> tests/hardening/6.1.14_find_sgid_files.sh renamed: tests/hardening/12.6_etc_group_ownership.sh -> tests/hardening/6.1.2_etc_passwd_permissions.sh renamed: tests/hardening/12.5_etc_shadow_ownership.sh -> tests/hardening/6.1.3_etc_shadow_permissions.sh renamed: tests/hardening/12.4_etc_passwd_ownership.sh -> tests/hardening/6.1.4_etc_group_permissions.sh
85 lines
2.8 KiB
Bash
Executable File
85 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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#
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# CIS Debian Hardening
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#
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#
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# 6.1.14 Audit SGID executables (Not 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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DESCRIPTION="Find SGID system executables."
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IGNORED_PATH=''
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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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info "Checking if there are sgid files"
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FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }' )
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# shellcheck disable=2086
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if [ ! -z $IGNORED_PATH ]; then
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FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -regextype 'egrep' ! -regex "$IGNORED_PATH" -print)
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else
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FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -print)
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fi
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BAD_BINARIES=""
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for BINARY in $FOUND_BINARIES; do
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if grep -qw "$BINARY" <<< "$EXCEPTIONS"; then
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debug "$BINARY is confirmed as an exception"
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else
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BAD_BINARIES="$BAD_BINARIES $BINARY"
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fi
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done
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if [ ! -z "$BAD_BINARIES" ]; then
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crit "Some sgid files are present"
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FORMATTED_RESULT=$(sed "s/ /\n/g" <<< "$BAD_BINARIES" | sort | uniq | tr '\n' ' ')
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crit "$FORMATTED_RESULT"
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else
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ok "No unknown sgid files found"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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info "Removing sgid on valid binary may seriously harm your system, report only here"
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}
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# This function will create the config file for this check with default values
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create_config() {
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cat <<EOF
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status=audit
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# Put here valid binaries with sgid enabled separated by spaces
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EXCEPTIONS="/sbin/unix_chkpwd /usr/sbin/unix_chkpwd /usr/bin/bsd-write /usr/bin/chage /usr/bin/crontab /usr/bin/expiry /usr/bin/mutt_dotlock /usr/bin/screen /usr/bin/ssh-agent /usr/bin/wall /usr/sbin/postdrop /usr/sbin/postqueue /usr/bin/at /usr/bin/dotlockfile /usr/bin/mail-lock /usr/bin/mail-touchlock /usr/bin/mail-unlock"
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EOF
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}
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# This function will check config parameters required
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check_config() {
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if [ -z "$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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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=/opt/debian-cis/lib/main.sh
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. "$CIS_ROOT_DIR"/lib/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_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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