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 6FORMAT STRING PROBLEMS
OVERVIEW OF THE SIN
Format string problems are one of the few truly new attacks to surface in recent years. One of the first mentions of format string bugs was on June 23, 2000, in a post by Lamagra Argamal (www.securityfocus.com/archive/1/66842); Pascal Bouchareine more clearly explained them almost a month later (www.securityfocus.com/archive/1/70552). An earlier post by Mark Slemko (www.securityfocus.com/archive/1/10383) noted the basics of the problem but missed the ability of format string bugs to write memory.
As with many security problems, the root cause of format string bugs is trusting user-supplied input without validation. In C/C++, format string bugs can be used to write to arbitrary memory locations, ...
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