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82 lines
2.4 KiB
Bash
Executable File
82 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# CIS Debian 7 Hardening
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#
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#
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# 4.1 Restrict Core Dumps (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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LIMIT_FILE='/etc/security/limits.conf'
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LIMIT_PATTERN='^\*[[:space:]]*hard[[:space:]]*core[[:space:]]*0$'
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SYSCTL_PARAM='fs.suid_dumpable'
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SYSCTL_EXP_RESULT=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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does_pattern_exists_in_file $LIMIT_FILE $LIMIT_PATTERN
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if [ $FNRET != 0 ]; then
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crit "$LIMIT_PATTERN not present in $LIMIT_FILE"
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else
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ok "$LIMIT_PATTERN present in $LIMIT_FILE"
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fi
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has_sysctl_param_expected_result "$SYSCTL_PARAM" "$SYSCTL_EXP_RESULT"
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if [ $FNRET != 0 ]; then
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crit "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT"
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elif [ $FNRET = 255 ]; then
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warn "$SYSCTL_PARAM does not exist -- Typo?"
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else
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ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
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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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does_pattern_exists_in_file $LIMIT_FILE $LIMIT_PATTERN
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if [ $FNRET != 0 ]; then
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warn "$LIMIT_PATTERN not present in $LIMIT_FILE, addning at the end of $LIMIT_FILE"
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add_end_of_file $LIMIT_FILE "* hard core 0"
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else
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ok "$LIMIT_PATTERN present in $LIMIT_FILE"
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fi
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has_sysctl_param_expected_result "$SYSCTL_PARAM" "$SYSCTL_EXP_RESULT"
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if [ $FNRET != 0 ]; then
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warn "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT -- Fixing"
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set_sysctl_param $SYSCTL_PARAM $SYSCTL_EXP_RESULT
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elif [ $FNRET = 255 ]; then
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warn "$SYSCTL_PARAM does not exist -- Typo?"
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else
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ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
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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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:
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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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echo "There is no /etc/default/cis-hardening file, cannot source CIS_ROOT_DIR variable, aborting"
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exit 128
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else
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. /etc/default/cis-hardening
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if [ -z ${CIS_ROOT_DIR:-} ]; then
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echo "No CIS_ROOT_DIR variable, aborting"
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exit 128
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fi
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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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. $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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