Author: Alexander Anisimov
Heap Overflow
Let`s take a look at this pretty simple example of a vulnerable function:
Heap Overflow
Let`s take a look at this pretty simple example of a vulnerable function:
As we can see here the vulner() function copies data from a string pointed by str to an allocated memory block pointed at by buf, without a bound check.
A string larger than 127 bytes passed to it will thereby overwrite the data coincidental to this memory block (Which is, actually, a header of the following memory block).
