By Enrico Perla, Massimiliano Oldani
The variety of protection countermeasures opposed to user-land exploitation is at the upward push. due to this, kernel exploitation is changing into even more renowned between make the most writers and attackers. twiddling with the guts of the working approach could be a risky online game: This e-book covers the theoretical concepts and techniques had to advance trustworthy and powerful kernel-level exploits and applies them to various working structures (Linux, Solaris, Mac OS X, and Windows). Kernel exploits require either paintings and technology to accomplish. each OS has its quirks and so each make the most has to be molded to totally make the most its aim. This booklet discusses the preferred OS families-UNIX derivatives, Mac OS X, and Windows-and the right way to achieve entire regulate over them. suggestions and strategies are awarded categorically in order that even if a particularly distinct take advantage of has been patched, the foundational details that you've learn may also help you to jot down a more moderen, larger assault or a extra concrete layout and protective structure.
* Covers various working method households - UNIX derivatives, Mac OS X, Windows
* info universal eventualities akin to frequent reminiscence corruption (stack overflow, heap overflow, etc.) matters, logical insects and race conditions
* provides the reader from user-land exploitation to the area of kernel-land (OS) exploits/attacks, with a selected concentrate on the stairs that bring about the construction of profitable thoughts, for you to provide to the reader whatever greater than only a set of tricks
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Additional resources for A Guide to Kernel Exploitation: Attacking the Core
For instance, consider a pointer declared as a local variable, as shown in the following code. /p Pointer value: 0x41414141 macosxbox$ 23 24 CHAPTER 2 A Taxonomy of Kernel Vulnerabilities As you can see, the pointer allocated inside ptr un initialized() has, as we predicted, the value the previous function left on the stack. A range of memory that has some leftover data is usually referred to as dead memory (or a dead stack). Granted, we crafted that example, and you might think such a thing is unlikely to happen.
Txt. 7. Balestra F, Branco RR, 2009. 06]. 8. Seacord RC, 2008. The CERT C secure coding standard. Addison Wesley. 9. Starzetz P, 2005. 05]. 10. Starzetz P, 2005. Linux kernel i386 SMP page fault handler privilege escalation, www. 05]. 11. Alexander V, 2005. securityfocus. com/bid/14785. 12. Sun Microsystems. com/app/docs/doc/ 817 6223. 13. Pol J, 2003. 03]. 14. Krahmer S, 2009. html. 45 CHAPTER Stairway to Successful Kernel Exploitation 3 INFORMATION IN THIS CHAPTER • A Look at the Architecture Level • The Execution Step • The Triggering Step • The Information-Gathering Step INTRODUCTION In Chapter 2, we said a bug becomes a security issue as soon as someone figures out how to take advantage of it.
Txt. Endnotes 5. Bonwick J, 1994. The slab allocator: an object caching kernel memory allocator, www. a. 6. Klein T, 2009. txt. 7. Balestra F, Branco RR, 2009. 06]. 8. Seacord RC, 2008. The CERT C secure coding standard. Addison Wesley. 9. Starzetz P, 2005. 05]. 10. Starzetz P, 2005. Linux kernel i386 SMP page fault handler privilege escalation, www. 05]. 11. Alexander V, 2005. securityfocus. com/bid/14785. 12. Sun Microsystems. com/app/docs/doc/ 817 6223. 13. Pol J, 2003. 03]. 14. Krahmer S, 2009.
A Guide to Kernel Exploitation: Attacking the Core by Enrico Perla, Massimiliano Oldani