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IMP(shellcheck): replace ! -z by -n (SC2236)

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This commit is contained in:
Thibault Ayanides 2020-12-04 15:14:18 +01:00
parent eaf56ca25e
commit d371b8d057
14 changed files with 29 additions and 30 deletions
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4
bin/hardening/1.1.21_sticky_bit_world_writable_folder.sh
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@ -22,7 +22,7 @@ audit() {
info "Checking if setuid is set on world writable Directories"
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'})
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some world writable directories are not on sticky bit mode!"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<$RESULT | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"
@ -34,7 +34,7 @@ audit() {
# This function will be called if the script status is on enabled mode
apply() {
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d -perm -0002 2>/dev/null | xargs chmod a+t
else
ok "All world writable directories have a sticky bit, nothing to apply"

4
bin/hardening/5.4.2_disable_system_accounts.sh
View File

@ -44,7 +44,7 @@ audit() {
fi
done
IFS=$IFS_BAK
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some admin accounts don't have any of $ACCEPTED_SHELLS as their login shell"
crit "$RESULT"
else
@ -71,7 +71,7 @@ apply() {
fi
done
IFS=$IFS_BAK
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
warn "Some admin accounts don't have any of $ACCEPTED_SHELLS as their login shell -- Fixing"
warn "$RESULT"
for USER in $(echo "$RESULT" | cut -d: -f 1); do

4
bin/hardening/6.1.10_find_world_writable_file.sh
View File

@ -22,7 +22,7 @@ audit() {
info "Checking if there are world writable files"
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'})
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -0002 -print 2>/dev/null)
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some world writable files are present"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<$RESULT | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"
@ -34,7 +34,7 @@ audit() {
# This function will be called if the script status is on enabled mode
apply() {
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -0002 -print 2>/dev/null)
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
warn "chmoding o-w all files in the system"
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -0002 -print 2>/dev/null | xargs chmod o-w
else

8
bin/hardening/6.1.11_find_unowned_files.sh
View File

@ -24,12 +24,12 @@ EXCLUDED=''
audit() {
info "Checking if there are unowned files"
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'})
if [ ! -z $EXCLUDED ]; then
if [ -n "$EXCLUDED" ]; then
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -regextype 'egrep' ! -regex "$EXCLUDED" -print 2>/dev/null)
else
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -print 2>/dev/null)
fi
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some unowned files are present"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<$RESULT | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"
@ -40,12 +40,12 @@ audit() {
# This function will be called if the script status is on enabled mode
apply() {
if [ ! -z $EXCLUDED ]; then
if [ -n "$EXCLUDED" ]; then
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -regextype 'egrep' ! -regex "$EXCLUDED" -ls 2>/dev/null)
else
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -ls 2>/dev/null)
fi
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
warn "Applying chown on all unowned files in the system"
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -print 2>/dev/null | xargs chown $USER
else

8
bin/hardening/6.1.12_find_ungrouped_files.sh
View File

@ -24,12 +24,12 @@ EXCLUDED=''
audit() {
info "Checking if there are ungrouped files"
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'})
if [ ! -z $EXCLUDED ]; then
if [ -n "$EXCLUDED" ]; then
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nogroup -regextype 'egrep' ! -regex "$EXCLUDED" -print 2>/dev/null)
else
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nogroup -print 2>/dev/null)
fi
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some ungrouped files are present"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<$RESULT | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"
@ -40,12 +40,12 @@ audit() {
# This function will be called if the script status is on enabled mode
apply() {
if [ ! -z $EXCLUDED ]; then
if [ -n "$EXCLUDED" ]; then
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -regextype 'egrep' ! -regex "$EXCLUDED" -ls 2>/dev/null)
else
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -ls 2>/dev/null)
fi
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
warn "Applying chgrp on all ungrouped files in the system"
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -print 2>/dev/null | xargs chgrp $GROUP
else

4
bin/hardening/6.1.13_find_suid_files.sh
View File

@ -23,7 +23,7 @@ audit() {
info "Checking if there are suid files"
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }')
# shellcheck disable=2086
if [ ! -z $IGNORED_PATH ]; then
if [ -n "$IGNORED_PATH" ]; then
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -regextype 'egrep' ! -regex "$IGNORED_PATH" -print)
else
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -print)
@ -36,7 +36,7 @@ audit() {
BAD_BINARIES="$BAD_BINARIES $BINARY"
fi
done
if [ ! -z "$BAD_BINARIES" ]; then
if [ -n "$BAD_BINARIES" ]; then
crit "Some suid files are present"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<"$BAD_BINARIES" | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"

4
bin/hardening/6.1.14_find_sgid_files.sh
View File

@ -23,7 +23,7 @@ audit() {
info "Checking if there are sgid files"
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }')
# shellcheck disable=2086
if [ ! -z $IGNORED_PATH ]; then
if [ -n "$IGNORED_PATH" ]; then
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -regextype 'egrep' ! -regex "$IGNORED_PATH" -print)
else
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -print)
@ -36,7 +36,7 @@ audit() {
BAD_BINARIES="$BAD_BINARIES $BINARY"
fi
done
if [ ! -z "$BAD_BINARIES" ]; then
if [ -n "$BAD_BINARIES" ]; then
crit "Some sgid files are present"
FORMATTED_RESULT=$(sed "s/ /\n/g" <<<"$BAD_BINARIES" | sort | uniq | tr '\n' ' ')
crit "$FORMATTED_RESULT"

2
bin/hardening/6.2.10_check_user_dot_file_perm.sh
View File

@ -51,7 +51,7 @@ apply() {
FILEPERM=$(ls -ld $FILE | cut -f1 -d" ")
if [ $(echo $FILEPERM | cut -c6) != "-" ]; then
warn "Group Write permission set on FILE $FILE"
chmod g-w "$FILE"
chmod g-w "$FILE"
fi
if [ $(echo $FILEPERM | cut -c9) != "-" ]; then
warn "Other Write permission set on FILE $FILE"

6
bin/hardening/6.2.1_remove_empty_password_field.sh
View File

@ -21,9 +21,9 @@ DESCRIPTION="Ensure password fields are not empty in /etc/shadow."
audit() {
info "Checking if accounts have an empty password"
RESULT=$(get_db shadow | awk -F: '($2 == "" ) { print $1 }')
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some accounts have an empty password"
crit $RESULT
crit "$RESULT"
else
ok "All accounts have a password"
fi
@ -32,7 +32,7 @@ audit() {
# This function will be called if the script status is on enabled mode
apply() {
RESULT=$(get_db shadow | awk -F: '($2 == "" ) { print $1 }')
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
warn "Some accounts have an empty password"
for ACCOUNT in $RESULT; do
info "Locking $ACCOUNT"

5
bin/hardening/6.2.20_shadow_group_empty.sh
View File

@ -17,7 +17,6 @@ HARDENING_LEVEL=1
# shellcheck disable=2034
DESCRIPTION="There is no user in shadow group (that can read /etc/shadow file)."
ERRORS=0
FILEGROUP='/etc/group'
PATTERN='^shadow:x:[[:digit:]]+:'
@ -29,7 +28,7 @@ audit() {
RESULT=$(grep -E "$PATTERN" $FILEGROUP | cut -d: -f4)
GROUPID=$(getent group shadow | cut -d: -f3)
debug "$RESULT $GROUPID"
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some users belong to shadow group: $RESULT"
else
ok "No user belongs to shadow group"
@ -37,7 +36,7 @@ audit() {
info "Checking if a user has $GROUPID as primary group"
RESULT=$(awk -F: '($4 == shadowid) { print $1 }' shadowid=$GROUPID /etc/passwd)
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some users have shadow id as their primary group: $RESULT"
else
ok "No user has shadow id as their primary group"

2
bin/hardening/6.2.5_find_0_uid_non_root_account.sh
View File

@ -40,7 +40,7 @@ audit() {
debug "$ACCOUNT not found in exceptions"
fi
done
if [ ! -z "$RESULT" ]; then
if [ -n "$RESULT" ]; then
crit "Some accounts have uid 0: $(tr '\n' ' ' <<<"$RESULT")"
else
ok "No account with uid 0 appart from root ${FOUND_EXCEPTIONS:+and configured exceptions:}$FOUND_EXCEPTIONS"

4
bin/hardening/99.5.4_ssh_keys_from.sh
View File

@ -53,12 +53,12 @@ check_ip() {
ok_ips=$(sed 's/ $//' <<<"${ok_ips_allowed}")
bad_ips=$(sed 's/ $//' <<<"${bad_ips}")
if [[ -z $bad_ips ]]; then
if [[ ! -z $ok_ips ]]; then
if [[ -n $ok_ips ]]; then
ok "Line $linum of $file allows ssh access only from allowed IPs ($ok_ips)."
fi
else
crit "Line $linum of $file allows ssh access from (${bad_ips}) that are not allowed."
if [[ ! -z $ok_ips ]]; then
if [[ -n $ok_ips ]]; then
ok "Line $linum of $file allows ssh access from at least allowed IPs ($ok_ips)."
fi
fi

2
tests/hardening/1.1.21_sticky_bit_world_writable_folder.sh
View File

@ -12,7 +12,7 @@ test_audit() {
describe Tests purposely failing
local targetdir="/home/secaudit/world_writable_folder"
mkdir $targetdir || true
chmod 777 $targetdir
chmod 777 "$targetdir"
register_test retvalshouldbe 1
register_test contain "Some world writable directories are not on sticky bit mode"
run noncompliant /opt/debian-cis/bin/hardening/"${script}".sh --audit-all

2
tests/run_all_targets.sh
View File

@ -70,7 +70,7 @@ for target in $("$(dirname "$0")"/docker_build_and_run_tests.sh 2>&1 | grep "Sup
fi
done
if [[ ! -z "$failedtarget" && "$nowait" -eq 0 ]]; then
if [[ -n "$failedtarget" && "$nowait" -eq 0 ]]; then
echo -e "\nPress \e[1mENTER\e[0m to display failed test logs"
echo -e "Use \e[1m:n\e[0m (next) and \e[1m:p\e[0m (previous) to navigate between log files"
echo -e "and \e[1mq\e[0m to quit"