108 lines
3.5 KiB
Bash
Executable File
108 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian audit 7/8/9 or CentOS8 Hardening
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#
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#
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# 9.2.11 Set deny times for Password Attempts (Scored)
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# The number in the original document is 9.2.2
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# for login and ssh service
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# Author : Samson wen, Samson <sccxboy@gmail.com>
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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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HARDENING_LEVEL=3
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PACKAGE='libpam-modules-bin'
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PAMLIBNAME='pam_tally2.so'
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AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_tally2.so'
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AUTHFILE='/etc/pam.d/common-auth'
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AUTHRULE='auth required pam_tally2.so deny=3 even_deny_root unlock_time=900'
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ADDPATTERNLINE='# pam-auth-update(8) for details.'
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DENYOPTION='deny'
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DENY_VAL=3
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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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is_pkg_installed $PACKAGE
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if [ $FNRET != 0 ]; then
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crit "$PACKAGE is not installed!"
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FNRET=1
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else
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ok "$PACKAGE is installed"
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does_pattern_exist_in_file $AUTHFILE $AUTHPATTERN
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if [ $FNRET = 0 ]; then
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ok "$AUTHPATTERN is present in $AUTHFILE."
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check_param_pair_by_pam $AUTHFILE $PAMLIBNAME $DENYOPTION le $DENY_VAL
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if [ $FNRET = 0 ]; then
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ok "$DENYOPTION set condition is less-than-or-equal-to $DENY_VAL"
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else
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crit "$DENYOPTION set condition is not $DENY_VAL"
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fi
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else
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crit "$AUTHPATTERN is not present in $AUTHFILE"
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FNRET=2
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fi
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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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if [ $FNRET = 0 ]; then
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ok "$DENYOPTION set condition is less-than-or-equal-to $DENY_VAL"
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elif [ $FNRET = 1 ]; then
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warn "Apply:$PACKAGE is absent, installing it"
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install_package $PACKAGE
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elif [ $FNRET = 2 ]; then
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warn "Apply:$AUTHPATTERN is not present in $AUTHFILE"
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if [ $OS_RELEASE -eq 2 ]; then
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add_line_file_after_pattern_lastline "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
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else
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add_line_file_after_pattern "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
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fi
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elif [ $FNRET = 3 ]; then
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crit "$AUTHFILE is not exist, please check"
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elif [ $FNRET = 4 ]; then
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warn "Apply:$DENYOPTION is not conf"
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add_option_to_auth_check $AUTHFILE $PAMLIBNAME "$DENYOPTION=$DENY_VAL"
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elif [ $FNRET = 5 ]; then
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warn "Apply:$DENYOPTION set is not match legally, reset it to $DENY_VAL"
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reset_option_to_password_check $AUTHFILE $PAMLIBNAME "$DENYOPTION" "$DENY_VAL"
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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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if [ $OS_RELEASE -eq 2 ]; then
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PACKAGE='pam'
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PAMLIBNAME='pam_failloc.so'
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AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_failloc.so'
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AUTHFILE='/etc/pam.d/password-auth'
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AUTHRULE='auth required pam_failloc.so deny=3 even_deny_root unlock_time=900'
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ADDPATTERNLINE='auth[[:space:]]*required'
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else
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:
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fi
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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. $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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