What is an Integer Overflow Vulnerability? | Hacking 101

Показать описание

A quick introduction to how binary integers work, what an integer overflow is, and how they can lead to software vulnerabilities.

Marcus Hutchins

Рекомендации по теме

Комментарии

Marcus' voice is so soothing. 10/10 would take a yoga class with him.

monicapardeshi

Great video as always. I just want to note for those that may be new watching that 4, 294, 967, 295 is the maximum for *unsigned* ints(2^32 - 1), but not *signed* ints(2^31 - 1). You'll notice the use of the unsigned keyword in the parameters that are passed. I thought it was also useful to mention that in the beginning we are treating that as an unsigned 8-bit number, so when you say the lowest value for an int is 0, you mean for unsigned ints; regular ints would not overflow to zero but rather INT_MIN.

Also, yes, I know Marcus knows this and was just making a nice beginner-friendly tutorial. I'm just stopping by to help out the curious beginner. There's lots more fun and oddities with ints as you progress :p

WhatTheWeb

The most crystal clear explanation of overflows I've ever seen. Thanks Marcus, epic stuff.!

RobertWallhead

Probably the BEST explanation at an atomic level of an integer overflow I have ever seen. Great job Bro.

matthewlandry

You're the man, Marcus. I was searching for several integer overflow explanations and when I came across this one I stopped to make some popcorn.

ikehilyard

I like how you give us an intuitive real world example with the stock market, but also show us a technical example with the code. Awesome video!

Treegrower

I'd love to see a video in the future of how this heap overflow can be exploited. This was a great video!

Firefoxgaming

Very good video, straight to the point. Many thanks for sharing!

dxwoo

Thanks for the explanation
Really helpful

uchennagodfrey

Omg I understand! I've never understood this before! Thank you! 😭❤️

catboy_official

You got to just before the point where you explain the hacking part. lol What a tease!

deemon

Great explanation! The lack of memory deallocation made me twitch a bit, but that is my issue. :)

RandyFortier

please do more short informative videos like this.

banana-

Do creating a buffer overflow in an array next!

internetwarrior

Best cyber security content on YouTube hands down. If you disagree I must not know the channel you speak of so drop below 👇

itsme

Really good pratical example at the end. By the way do u still stream on twitch lol

cipherbenchmarks

Interesting that it interprets the 4billion to set the sign bit in the signed int. Anyways nice video, thx!

NvrSwm

Very similar to the date over flow in 1999 to 2000 otherwise known as Y2K programmer problem.

DonMayfield

please make a video on how DLL injections work

parthgol

Can you reverse a real virus like wannacry, Step by step, . or doing a program with have vulnerability like buffer overflow and install to other pc then exploit it over the network ,

kalopseeia

What is an Integer Overflow Vulnerability? | Hacking 101

What is an Integer Overflow Vulnerability? | Hacking 101

overflow.c: integer overflow in C (Kevin Lynch)

Buffer Overflows and Integer Overflows - CompTIA Security+ SY0-401: 3.5

What is an integer overflow in Solidity?

Overflow in Signed and Unsigned Numbers

What is Integer Overflow? Under 1 min.

Domain 1.19: Integer overflow - CompTIA Security+ SY0 601

Integer Overflow Vulnerability | Binary Exploitation - 0x2

What is Integer Overflow Attack? | Impossible Number 247 CTF

Integer overflow in practice

Java Integer Overflow Problem Explained by Example - Java Tutorial - Appficial

23. Integer Overflow in C - CS101 Introduction to Computing

Integer Overflow in Solidity 0.8.0?

Integer Overflow in Buckshot Roulette

Integer Overflow - CTF Cookbook - pwn

†: Signed and Unsigned Integers - Integer Overflows - Pwn Adventure 3

Binary Overflow

Check for Integer Overflow | GeeksforGeeks

The Integer Overflow Error

Integer Overflows: When 15 + 1 doesn't equal 16 [Capture The Flag Fundamentals]

Demonstrating an Integer Overflow in Bitdefender Internet Security

C++ : why there is a integer overflow in this multiplication?

Binary Addition & Overflow - Computerphile

Integer overflow and underflow explained