Re: Problem in IE's File Type Recognition

[email protected] (Peter Gutmann)
Newsgroups gmane.comp.security.vulnerabilities
Message-ID <[email protected]>
[email protected] writes:

>I found out one way to make Internet Explorer ver 6.0 recognize incorrectly
>type of any particular files. E.g one file named "abcd.exe" is Application
>type but we can force the IE browser to understand that file is "Image/JPG"
>or "Image/Gif" and so on ..

Isn't this well-known?  Because so many sites incorrectly identify content, MS
made IE able to dig into content to recognise the true type in order to make
broken sites "work".  There's a config option buried somewhere deep down where
you can turn this "intelligence" off ("Open files based on content, not file
extension"), but it's enabled by default.

Peter.
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