For this to be possible, the program remembers the current position on the stack (stack pointer) and the memory location where it needs to return after the current function is finished (return address). The trick behind a stack overflow attack is to overwrite this return address so that the ...
hardware and software exceptions. It thus prevents an attacker from being able to make use of the SEH overwrite exploitation technique. At a functional level, an SEH overwrite is achieved using a stack-based buffer overflow to overwrite an exception registration record, stored on a thread’s ...
What Is Exception Handling? Exception handling is a technique in programming to handle runtime errors, allowing the program to execute and recover when unexpected situations occur. Instead of showing errors and terminating a program, exception handling provides a structure to deal with errors and mana...
pointer that calls the virtual node turns to shellcode. Another operation M→tail→head=M→head during the removal from the linked list can also be used to implement attacks. Heap spraying attack: Heap spraying is a technique used by the attacker in exploits to enable the execution of ...
The next part of the ICMP header is the pointer. It consists of 32 bits of data that point out the problem in the original IP message. Specifically, the pointer identifies the byte location in the original IP message that caused the generation of the problem message. The receiving device lo...
The internet is a battlefield. Some people want peace, and others want to sow chaos. The two groups must meet in a peaceful center and come to an agreement. When developers considered this problem, they reached for military terminology to explain their goals. ...
This code is perfectly valid Java 8. The first line defines a function that prepends “@” to a String. The last two lines define functions that do the same thing: get the length of a String. The Java compiler is smart enough to convert the method reference to String’slength()method...
Compression isoften compared to data deduplication, but the two techniques operate differently. Deduplication is a type of compression that looks for redundant chunks of data across a storage or file system and then replaces each duplicate chunk with a pointer to the original. Data compression algor...
One example is when calling a virtual function virtually; the function can’t be inlined because the compiler may not know which function is going to be called. Another example is when calling a function through a pointer to the function rather than using its name. You should strive to ...
Executing arbitrary code.With control of the program's execution flow, the attacker potentially sets new values for the return pointer, which is the address where the program should go next. This all happens when the attacker manages to change the return pointer to point to a location of their...