September 2009
Intermediate to advanced
464 pages
9h 58m
English
book
24 Deadly Sins of Software Security: Programming Flaws and How to Fix Them
by Michael Howard, David LeBlanc, John Viega
Content preview from 24 Deadly Sins of Software Security: Programming Flaws and How to Fix Them
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SIN 7INTEGER OVERFLOWS
OVERVIEW OF THE SIN
Integer overflows, underflows, and arithmetic overflows of all types, especially floating point errors, have been a problem since the beginning of computer programming. Integer overflows have been a subject of security research once the easy stack-smashing attacks were largely replaced by heap exploits. While integer overflows have been involved in exploits for quite some time, in the last several years, they’re frequently the root cause of many reported issues.
The core of the problem is that for nearly every binary format in which we can choose to represent numbers, there are operations where the result isn’t what you’d get with pencil and paper. There are exceptions—some languages implement variable-size ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.