blob: b606c047920c6d6da10fe9e13aff0028ce23ecca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
= 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:
|
