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b9e129d8fe
Shellcheck recommands to replace sed by shell expansions in 'simple' cases. However, the replacement here is likely to lead to erros, so we disable this rule. Moreover, it does'nt really add readability.
70 lines
2.4 KiB
Bash
Executable File
70 lines
2.4 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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# 1.1.21 Ensure Sticky Bit set on All World-Writable Directories (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="Set sticky bit on world writable directories to prevent users from deleting or renaming files that are not owned by them."
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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 setuid is set on world writable Directories"
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FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
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RESULT=$($SUDO_CMD find $FS_NAMES -xdev -type d \( -perm -0002 -a ! -perm -1000 \) -print 2>/dev/null)
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if [ -n "$RESULT" ]; then
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crit "Some world writable directories are not on sticky bit mode!"
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# shellcheck disable=SC2001
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FORMATTED_RESULT=$(sed "s/ /\n/g" <<<"$RESULT" | sort | uniq | tr '\n' ' ')
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crit "$FORMATTED_RESULT"
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else
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ok "All world writable directories have a sticky bit"
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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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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)
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if [ -n "$RESULT" ]; then
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df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type d -perm -0002 2>/dev/null | xargs chmod a+t
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else
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ok "All world writable directories have a sticky bit, nothing to apply"
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fi
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}
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# This function will check config parameters required
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check_config() {
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# No param for this function
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "$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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