A stack overflow is a type ofbuffer overflowerror that occurs when a computer program tries to use more memory space in the call stack than has been allocated to that stack. The call stack, also referred to as the stack segment, is a fixed-sizedbufferthat stores local function variables and...
yes, a stack is extremely useful for checking balanced parentheses. you can push each opening parenthesis onto the stack, and when you encounter a closing parenthesis, you pop the stack. if the stack is empty when you're done, the parentheses are balanced. when would a stack overflow occur...
The stack overflow problem is not as prevalent on the newer operating systems, however, because of the small footprint on mobile devices it can become challenging. If your operating system on your mobile device is giving you a stack overflow error, you may have too many apps running. You ...
yes, a stack is extremely useful for checking balanced parentheses. you can push each opening parenthesis onto the stack, and when you encounter a closing parenthesis, you pop the stack. if the stack is empty when you're done, the parentheses are balanced. when would a stack overflow occur...
Buffer overflow is a kind of exception specific to the field of computing. A buffer overflow occurs when a program attempts to put more data into a buffer, exceeding the capacity of the buffer. As a result, the data overflows from the allocated memory of the buffer and overwrites the data...
Structured exception handling overwrite protection (SEHOP): Attackers may look to overwrite the structured exception handling (SEH), which is a built-in system that manages hardware and software exceptions. They do this through a stack-based overflow attack to overwrite the exception registration record...
If an exception handler that can handle the type of the exception object is found, the exception handler chosen is said to "catch" the exception. If the runtime system cannot find an appropriate exception handler even after searching through the entire call stack, the operating system generates...
It is hard to define exceptions. To quote W. Kahan, An arithmetic exception arises when an attempted atomic arithmetic operation has no result that would be acceptable...
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 stack. ...
Here's a fun project attempting to explain what exactly is happening under the hood for some counter-intuitive snippets and lesser-known features in Python.While some of the examples you see below may not be WTFs in the truest sense, but they'll reveal some of the interesting parts of ...