WebApp Sec mailing list archives

Re: Canonicalization


From: Yann <cactux () gmail com>
Date: Wed, 12 Apr 2006 14:31:52 +0200

11 Apr 2006 13:12:29 -0000, susam_pal () yahoo co in <susam_pal () yahoo co in>:
I found the following paragraph in owasp.org. Can someone please elaborate on this?

Parameters must be converted to the simplest form before they are validated,
otherwise, malicious input can be masked and it can slip past filters. The process of
simplifying these encodings is called "canonicalization."

There is a (very short) article on Wikipedia, to begin with:
http://en.wikipedia.org/wiki/Canonicalization

There is an example, not directly related to security.

Yann
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Yann Cochard : http://yanncochard.com/
Au Cactus Francophone : http://www.cactuspro.com/
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