 |
- ... user-mode2.1
- This is not true in all
cases. The authors would like to take care to mention that solutions like
grsecurity from the PaX team have had support for features that help to
provide kernel-level security. Furthermore, stack canary implementations have
existed and are integrated with many mainstream kernels. However, not all
device drivers have been compiled to take advantage of these new
enhancements
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ... with2.2
- So long as it's a
task-oriented operating system with a clear separation between system and
user
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ... thumb2.3
- This fact hasn't stopped
developers from using dangerous string functions
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ... 256KB2.4
- This default limit is controlled by the optional
header of an executable binary
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ...
this4.1
- Note, this implementation is only designed to work on XP SP2 and
Windows 2003 Server SP1. Modifications would need to be made to make it work
on previous versions of XP and 2003.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ... portable5.1
- Experimentation shows that
0x8066662c is a reliable location
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ... exploit6.1
- Keeping in mind, of course, that there are
indeed kernel-mode vulnerabilities that are difficult to exploit in just the
same way that there are indeed user-mode vulnerabilities that are difficult to
exploit.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
|
