Exam 12: Buffer Overflows

To circumvent stack buffer overflows, programmers create applications that do not allow extra characters to be accepted by a variable making the traditional buffer overflow method problematic. This check can be bypassed by using the ____ method.

The ____ function is a secure replacement for the gets() function.

Buffer overflows can be divided into two categories: _________________________ and heap overflow.

Buffer overflow is a condition common to structured programming languages such as the "C" language.

What are the steps involved in a buffer overflow exploit?

The "____" language was used to write utilities and operating systems, including UNIX and Windows.

A(n) ____________________ is known as the corruption of the instruction pointer, which points to the memory area where the function to be executed is stored.

A heap provides a permanent memory space unlike the temporary memory space that is provided by a stack.

On some specific operating systems, the kernel can be patched in such a way that running processes are not affected by buffer overflow conditions. This patch is called ______________________________.

The ____ bug targets the variables that are used by functions to store values.

How can buffer overflows be avoided?

A stack cannot store details regarding the function that called the currently executing function.

Buffer overflows are always intentional attacks.

____________________ has a goal of overloading the memory space provided to the variable. This might either allow the attacker to crash the computer or break into it.

Why do programs need a memory stack area?

____________________ happens when input applied to a variable is larger than the memory allotted to that variable.

When a user requests to execute a "C" program file, the primary function referred to is the ____ function.

Functions use variables to store values that may be stored temporarily or permanently.