One real-life example of a buffer overflow attack is the 1988 Morris Worm. The Morris Worm was acomputer wormthat exploited a buffer overflow vulnerability in Unix programs. The worm infected over 60,000 computers worldwide, causing an estimated $10 billion in damages. Buffer overflows are lik...
Fig. 8.1. Buffer overflow. An attacker can input data past the buffer bounds and corrupt program data.No permission required. To understand how a buffer overflow attack is performed, we need to consider the following scenario. In our application, we are receiving user commands over a UART. Th...
For example, in the case of a function that has a buffer on the stack, the function's return address is placed in memory after the buffer. So, if the attacker can overflow the buffer, he can overwrite the function return address so that when the function returns, it returns to an ...
Bufferoverflow4 BasicsofBufferOverflowBasicsofBufferOverflow •A“stuffing”ofmoredataintoabufferthan theallocatedsize. •Twotypes: –corrupttheexecutionstackbywritingpastthe endofanarray(aka.smashingthestack/stack overflow) –corrupttheheap(heapoverflow) ...
Thus, this attack is only feasible on programs that already run for a longer time when they expect us to provide input (i.e. not feasible for buffer overflows based on program call arguments), for example network daemons. As the /proc/PID/stat file is readable by anybody, we don't ...
For example, subtracting 0-1 and storing the result in an unsigned 16-bit integer will result in a value of 2^16 - 1. Heap Overflow` also attack buffer located in heap no return address hence no easy transfer of control. may have function pointers that can be exploited. ...
Overuse of coastal regions may lead to coastal erosion and shoreline retreat, threatening the inherent life and property of the coast. This is because typhoon waves with storm surges frequently attack overdeveloped coasts and related structures. In the present study, coastal buffer and protection zones...