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= Sichere Software-Entwicklung im systemnahen Bereich
:author: Jan Klemkow, Benjamin Franzke
:lang: de
:imagesdir: image
:toc:
== Standard-C-Bibliothek
* Pufferueberlaeufe
* +strcpy(2)+ vs. +strncpy(2)+
* allgemeine Hinweise zur sicheren Programmierung:
** http://www.cert.org/secure-coding/
== Zu viele Rechte
* viele Programme haben zu viele Rechte
* dadurch zu hohes Risiko
* Risiko veringern durch Reduktion der Rechte
== Privilege-Revocation: OpenNTPD
image::ntpd_runtime.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep_1.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep_2.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep_3.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep_4.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep_5.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-priv-sep.svg[height="75%"]
== Privilege-Separation: Wayland
image::wayland-sep-pie.svg[width="45%"]
image::wayland-sep-ratio.svg[width="45%"]
== Process-Separation
image::proc-sep.svg[height="75%"]
== Process-Separation: setuid(2)
image::proc-sep-user.svg[height="75%"]
== Process-Separation: chroot(2)
image::proc-sep-chroot.svg[height="75%"]
== Kernel-Design
image::kernel-design.svg[width="100%"]
== Kernel-Design
image::kernel-context-sw.svg[width="100%"]
== Kernel-Design
== Vielen Dank fuer die Aufmerksamkeit
Fragen?
// vim: set syntax=asciidoc nospell spelllang=de,en:
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