Damcava35/deb12 scripts 4 (#287)

* fix: ipv6 may be enabled on a single interface

* feat: add new checks for debian12

systemd_timesyncd_is_enabled_and_running.sh	-> 2.3.2.2
rpcbind_is_disabled.sh				-> 2.1.12
ftp_client_not_installed.sh			-> 2.2.6
chrony_with_chrony_user.sh			-> 2.3.3.2
ipv6_is_enabled.sh				-> 3.1.1

---------

Co-authored-by: damien cavagnini <damien.cavagnini@corp.ovh.com>
Co-authored-by: GoldenKiwi <thibault.dewailly@corp.ovh.com>

tests/hardening/chrony_with_chrony_user.sh

@@ -0,0 +1,29 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+
+    describe prepare failing test
+    apt install -y chrony
+    echo "user root" >>/etc/chrony/chrony.conf
+    /usr/sbin/chronyd -Ux
+
+    describe On purpose failing test
+    register_test retvalshouldbe 1
+    # shellcheck disable=2154
+    run failed "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe correcting situation
+    sed -i 's/audit/enabled/' "${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    "${CIS_CHECKS_DIR}/${script}.sh" --apply || true
+
+    pkill chronyd
+    /usr/sbin/chronyd -Ux
+
+    describe resolved test
+    register_test retvalshouldbe 0
+    run failed "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    pkill chronyd
+    apt remove chrony -y
+
+}