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stack randomization
famous buffer overflow attacks
address space layout randomization
return to libc
aslr buffer overflow
stack guard
stack canaries
buffer overflow explained
ABSTRACT. Instruction-set randomization (ISR) is a technique based on randomizing the “language" understood by a system to pro- tect it from code-injection attacks. Such attacks were used by many computer worms in the past, but still pose a threat as it was confirmed by the recent Conficker worm outbreak, and the latest
These sets of instruction "gadgets" can then be chained by overwriting the return address, via a buffer overrun exploit, with the address of the first instruction of the first gadget. The first address of subsequent gadgets is then written successively onto the stack. At the conclusion of the first gadget, a return instruction will be
The idea of instruction randomization is to avoid code injection attacks. Say for example there is some vulnerable code that the attacker wishes to execute and all s/he has to do is to transfer the program control to the beginning of that code block. In a non-protected environment once the control is transferred
Abstract—Instruction set randomization (ISR) was proposed early in the last decade as a countermeasure against code injection attacks. However, it is considered to have lost its relevance; with the pervasiveness of code-reuse techniques in modern attacks, code injection no longer remains a foundational component in
Address space layout randomization (ASLR) is a computer security technique involved in preventing exploitation of memory corruption vulnerabilities. In order to prevent an attacker from reliably jumping to, for example, a particular exploited function in memory, ASLR randomly arranges the address space positions of key
The Effectiveness of Instruction Set Randomization. Ana Nora Sovarel. David Evans Nathanael Paul. University of Virginia, Department of Computer Science www.cs.virginia.edu/feeb. Abstract. Instruction Set Randomization (ISR) has been proposed as a promising defense against code injection attacks. It defuses all
6 Dec 2010 Instruction-set randomization (ISR) is a technique based on randomizing the "language" understood by a system to protect it from code-injection attacks. Such attacks were used by many computer worms in the past, but still pose a threat as it was confirmed by the recent Conficker worm outbreak, and the
ABSTRACT. We describe a new, general approach for safeguarding systems a- gainst any type of code-injection attack. We apply Kerckhoff's principle, by creating process-specific randomized instruction sets. (e.g., machine instructions) of the system executing potentially vul- nerable software. An attacker who does not
When foo() returns it pops the return address off the stack and jumps to that address (i.e. starts executing instructions from that address). Thus, the attacker has overwritten the return address with a pointer to the stack buffer char c[12] , which now contains attacker-supplied data. In an actual stack buffer overflow exploit the
An implementation of Instruction Set Randomization for x86 binaries using Intel's binary instrumentation tool Pin. Project Admins: George Portokalidis. Name. SourceForge. About Site Status @sfnet_ops · Powered by. Apache Allura™. Find and Develop Software. Create a Project Software Directory Top Downloaded
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