chore: add new scripts for debian 12 (#278)

- package_manager_is_configured         -> 1.2.1.2
- ptrace_scope_is_restricted            -> 1.5.2
- gdm_is_removed.sh                     -> 1.7.1
- dnsmasq_is_disabled.sh                -> 2.1.5

Co-authored-by: Damien Cavagnini <damien.cavagnini@corp.ovh.com>

tests/hardening/dnsmasq_is_disabled.sh

@@ -0,0 +1,36 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+
+    describe Prepare on purpose failed test
+    apt install -y dnsmasq
+    # running on a container, will can only test the package installation, not the service management
+
+    describe Running failed 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
+
+    describe Checking resolved state
+    register_test retvalshouldbe 0
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe Prepare test package dependencies
+    # try to install a package with not much dependencies
+    apt install -y ocserv
+    # running on a container, will can only test the package installation, not the service management
+
+    describe Running successfull test
+    register_test retvalshouldbe 0
+    # shellcheck disable=2154
+    run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe clean installation
+    apt remove -y ocserv
+    apt autoremove -y
+
+}

tests/hardening/gdm_is_removed.sh

@@ -0,0 +1,12 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+    describe Prepare test
+    apt remove -y gdm3
+
+    describe Running resolved test
+    register_test retvalshouldbe 0
+    # shellcheck disable=2154
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+}

tests/hardening/package_manager_is_configured.sh

@@ -0,0 +1,28 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+    describe prepare failing test
+    # we'll have to bring back the sources after the test
+    find /etc/apt -name '*.list' -exec cat {} \; -exec rm -f {} \; >>/tmp/sources.list
+    find /etc/apt -name '*.sources' -exec cat {} \; -exec rm -f {} \; >>/tmp/sources.sources
+
+    describe Running failed test
+    register_test retvalshouldbe 1
+    # shellcheck disable=2154
+    run failed "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe fix situation
+    if [ -s /tmp/sources.list ]; then
+        mv /tmp/sources.list /etc/apt/
+    fi
+
+    if [ -s /tmp/sources.sources ]; then
+        mv /tmp/sources.sources /etc/apt/sources.list.d/
+    fi
+
+    describe Running resolved test
+    register_test retvalshouldbe 0
+    # shellcheck disable=2154
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+}

tests/hardening/ptrace_scope_is_restricted.sh

@@ -0,0 +1,21 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+    # current value may differ among the OS
+    local current_value
+    current_value=$(sysctl kernel.yama.ptrace_scope | awk -F '=' '{print $2}' | sed 's/\ //g')
+
+    if [ "$current_value" -eq 1 ]; then
+        # can only test audit here, unless running on a privileged container
+        describe Running successfull test
+        register_test retvalshouldbe 0
+        # shellcheck disable=2154
+        run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+    else
+        # can only test audit here, unless running on a privileged container
+        describe Running failed test
+        register_test retvalshouldbe 1
+        # shellcheck disable=2154
+        run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+    fi
+}