= Sichere Software-Entwicklung im systemnahen Bereich
:author: Jan Klemkow, Benjamin Franzke
:lang: de
:imagesdir: image
:toc:

== Standard-C-Bibliothek

 * Pufferüberläufe
 * +strcpy(2)+ vs. +strncpy(2)+
 * allgemein zu sicherer Programmierung: *Carnegie Mellon University*
 ** http://www.cert.org/secure-coding/
 *** C
 *** C++
 *** Perl
 *** Java

== 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[height="50%"]
image::wayland-sep-ratio.svg[width="50%"]

== 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%"]

== Vielen Dank fuer die Aufmerksamkeit

Fragen?

// vim: set syntax=asciidoc nospell spelllang=de,en: