V8.13.400.2025.11.08

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

config/hooks/live/0020_dropbear_build.chroot

@@ -0,0 +1,57 @@
+#!/bin/bash
+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-10-11; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.live.builder
+# SPDX-Security-Contact: security@coresecret.eu
+set -Ceuo pipefail
+
+printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 '%s' starting ... \e[0m\n" "${0}"
+
+### Declare Arrays, HashMaps, and Variables.
+declare var_dropbear_version="2025.88"
+declare var_build_dir="/root/build"
+declare var_logfile="${var_build_dir}/_build.log"
+tar xjf "/root/dropbear/dropbear-${var_dropbear_version}.tar.bz2" -C "/root/build"
+cp "/root/dropbear/localoptions.h" "${var_build_dir}"
+cd "${var_build_dir}"
+
+### Flag Purpose:
+#  -fPIE              : Generate position-independent executable code
+#  -pie               : Link the executable as PIE (so that ASLR works)
+#  -static            : Fully statically linked against musl
+#  -s                 : Strip unnecessary symbols directly during linking
+#  -Wl,-z,relro,-z,now: Enables full RELRO (symbol resolution at program startup)
+
+# shellcheck disable=SC2016,SC2312
+setsid bash -c '
+    ### Sterile environment for the build-process.
+    export -n SHELLOPTS
+    set +u
+    unset PATH_SEPARATOR
+    PATH_SEPARATOR=":"
+    PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+    CC=musl-gcc \
+      CFLAGS="-Os -fPIE -Wno-undef -fstack-protector-strong -D_FORTIFY_SOURCE=2" \
+      LDFLAGS="-static -pie -s -Wl,-z,relro,-z,now" \
+      ./configure \
+      --enable-static \
+      --enable-openpty \
+      --disable-pam \
+      --disable-zlib
+
+    # shellcheck disable=2312
+    make -j"$(nproc)"
+  ' >> "${var_logfile}" 2>&1
+
+  rm -rf /root/dropbear
+
+printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${0}"
+
+exit 0
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh