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fix: Avoid find failures on too many files (#144)

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Signed-off-by: Tarik Megzari <tarik.megzari@corp.ovh.com>

Co-authored-by: Tarik Megzari <tarik.megzari@corp.ovh.com>
Co-authored-by: GoldenKiwi <thibault.dewailly@corp.ovh.com>
This commit is contained in:
Tarik Megzari 2022-03-02 17:49:28 +01:00 committed by GitHub
parent 20bf51f65b
commit b962155a3c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 25 additions and 25 deletions
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10
bin/hardening/1.1.21_sticky_bit_world_writable_folder.sh
View File

@ -25,10 +25,10 @@ audit() {
FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
if [ -n "$EXCEPTIONS" ]; then
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -regextype 'egrep' ! -regex $EXCEPTIONS -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type d \( -perm -0002 -a ! -perm -1000 \) -regextype 'egrep' ! -regex $EXCEPTIONS -print 2>/dev/null)
else
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
@ -45,14 +45,14 @@ audit() {
apply() {
if [ -n "$EXCEPTIONS" ]; then
# shellcheck disable=SC2086
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -regextype 'egrep' ! -regex $EXCEPTIONS -print 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type d \( -perm -0002 -a ! -perm -1000 \) -regextype 'egrep' ! -regex $EXCEPTIONS -print 2>/dev/null)
else
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
warn "Setting sticky bit on world writable directories"
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type d -perm -0002 2>/dev/null | xargs chmod a+t
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type d -perm -0002 2>/dev/null | xargs chmod a+t
else
ok "All world writable directories have a sticky bit, nothing to apply"
fi

2
bin/hardening/4.1.11_record_privileged_commands.sh
View File

@ -19,7 +19,7 @@ DESCRIPTION="Collect use of privileged commands."
SUDO_CMD='sudo -n'
# Find all files with setuid or setgid set
AUDIT_PARAMS=$($SUDO_CMD find / -xdev \( -perm -4000 -o -perm -2000 \) -type f |
AUDIT_PARAMS=$($SUDO_CMD find / -xdev -ignore_readdir_race \( -perm -4000 -o -perm -2000 \) -type f |
awk '{print "-a always,exit -F path=" $1 " -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged" }')
FILE='/etc/audit/audit.rules'

10
bin/hardening/6.1.10_find_world_writable_file.sh
View File

@ -26,10 +26,10 @@ audit() {
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -0002 -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -0002 -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
else
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -0002 -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -0002 -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
@ -46,14 +46,14 @@ audit() {
apply() {
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type f -perm -0002 -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type f -perm -0002 -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
else
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type f -perm -0002 -print 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type f -perm -0002 -print 2>/dev/null)
fi
if [ -n "$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
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -type f -perm -0002 -print 2>/dev/null | xargs chmod o-w
else
ok "No world writable files found, nothing to apply"
fi

10
bin/hardening/6.1.11_find_unowned_files.sh
View File

@ -26,10 +26,10 @@ audit() {
FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nouser -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
else
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nouser -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nouser -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
crit "Some unowned files are present"
@ -45,13 +45,13 @@ audit() {
apply() {
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nouser -regextype 'egrep' ! -regex $EXCLUDED -ls 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nouser -regextype 'egrep' ! -regex $EXCLUDED -ls 2>/dev/null)
else
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nouser -ls 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nouser -ls 2>/dev/null)
fi
if [ -n "$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"
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nouser -print 2>/dev/null | xargs chown "$USER"
else
ok "No unowned files found, nothing to apply"
fi

10
bin/hardening/6.1.12_find_ungrouped_files.sh
View File

@ -26,10 +26,10 @@ audit() {
FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nogroup -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nogroup -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
else
# shellcheck disable=SC2086
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -nogroup -print 2>/dev/null)
RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nogroup -print 2>/dev/null)
fi
if [ -n "$RESULT" ]; then
crit "Some ungrouped files are present"
@ -45,13 +45,13 @@ audit() {
apply() {
if [ -n "$EXCLUDED" ]; then
# shellcheck disable=SC2086
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nogroup -regextype 'egrep' ! -regex $EXCLUDED -ls 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -regextype 'egrep' ! -regex $EXCLUDED -ls 2>/dev/null)
else
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -nogroup -ls 2>/dev/null)
RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -ls 2>/dev/null)
fi
if [ -n "$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"
df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -print 2>/dev/null | xargs chgrp "$GROUP"
else
ok "No ungrouped files found, nothing to apply"
fi

4
bin/hardening/6.1.13_find_suid_files.sh
View File

@ -24,9 +24,9 @@ audit() {
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }')
# shellcheck disable=2086
if [ -n "$IGNORED_PATH" ]; then
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -regextype 'egrep' ! -regex $IGNORED_PATH -print)
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -4000 -regextype 'egrep' ! -regex $IGNORED_PATH -print)
else
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -print)
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -4000 -print)
fi
BAD_BINARIES=""
for BINARY in $FOUND_BINARIES; do

4
bin/hardening/6.1.14_find_sgid_files.sh
View File

@ -24,9 +24,9 @@ audit() {
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }')
# shellcheck disable=2086
if [ -n "$IGNORED_PATH" ]; then
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -regextype 'egrep' ! -regex $IGNORED_PATH -print)
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -2000 -regextype 'egrep' ! -regex $IGNORED_PATH -print)
else
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -print)
FOUND_BINARIES=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -type f -perm -2000 -print)
fi
BAD_BINARIES=""
for BINARY in $FOUND_BINARIES; do