Buffer Overflow

Buffer Overflow

Buffer overflow is problem when program is terminate abnormally A Buffer Overflow is a flaw by which a program reacts abnormally when the memory buffers are overloaded for example <'inputting a very large value in a c program which is integer based addition>. A buffer overflow can lead to program crash memory access error, garbage outputs etc

buffer overflow

In a buffer overflow attack the additional information here and there holds particular guidelines for activities expected by a programmer or malignant client for instance the information could trigger a reaction that harms documents, changes information or uncovers private data.
The Attacker used a buffer-overflow exploit to take advantage of a program so they waiting on a user’s input. To find out the false condition in the program There are two types of buffer overflows: stack-based and heap-based. Heap-based, which are difficult to execute and the least common of the two, attack an application by flooding the memory space reserved for a program. Stack-based buffer overflows, which are more common among attackers, exploit applications and programs by using what is known as a stack: memory space used to store user input

When over flow condition is arise

For better understanding of buffer over flow condition you must understand the given below program

 
#include 
 
void Test()
{
   char buff[4];
   printf("Some input: ");
   gets(buff);
   puts(buff);
}
 
int main(int argc, char *argv[ ])
{
   Test();
   return 0;
}

In our above program you can see we have a array which can contain only less then 4 character if we are entered more then 4 character then the program will return some error or program may return some garbage value so this is the advantage of hacker to interrupt with your program

Call us today at +91-9650202445 or Email us at info@craw.in

We strive to provide Our Customers with Top Notch Support to make their Theme Experience Wonderful Contact Us

Clients and Partners