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Date: Mon, 17 Nov 2014 00:10:47 +0100
From: Robert Święcki <>
Subject: Re: Fuzzing findings (and maybe CVE requests) -
 Image/GraphicsMagick, elfutils, GIMP, gdk-pixbuf, file, ndisasm, less

2014-11-16 21:43 GMT+01:00 Michal Zalewski <>:
>> However, even if tools like file/ndisasm/gimp/readelf can be used by
>> many (w/o strong system isolation boundaries) to analyze untrusted
>> inputs (for reverse engineering, malware analysis and similar
>> purposes) - I'd simply put a blame on those users
> Well, it's always the easy option, but keep in mind that there are
> countless tutorials that tell people to use 'file' or 'strings' to
> examine sketchy file, or use tools such as objdump to do hobby
> forensics.
> We can blame the authors of the tutorials - but it goes back to a
> fairly fundamental problem: the use cases aren't completely crazy
> (nothing *fundamentally* wrong in using 'strings' on a file you don't
> trust, right?), and their unsafe design is a fairly counterintuitive
> property to laypeople and many experts alike [*].
> So, for high-profile tools used in ways that are sort of plausible and
> probably common, we may just need to try & make them robust.


> (But of
> course, I'd be pragmatic in drawing the line: the Mayhem fuzzing thing
> went completely overboard.)

Robert Święcki

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