bugtraq - Re: blocking gzip encoded files

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Message-ID: <200402241300.47183.guallar@easternrad.com>
Date: Tue, 24 Feb 2004 13:00:47 -0500
From: "Josep L. Guallar-Esteve" <guallar@...ternrad.com>
To: bugtraq@...urityfocus.com
Subject: Re: blocking gzip encoded files

On Monday 23 February 2004 05:38 pm, Darwin Mecham wrote:
> It has recently come to my attention that most browsers happily
> do Accept-encoding: gzip and streaming decompression of
> HTML data received with Content-encoding: gzip
>  without asking.

This is because most browsers support HTTP-1.1 standard.

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11
http://www.w3.org/Talks/9608HTTP/
http://www.seoconsultants.com/articles/1000/http-compression.asp

> This has been in use since sometime in 1998.

IIRC, HTTP 1.1 was endorsed by W3C ~ 1999

> Is there a way to configure the run-of-the-mill browser to
> block these at the host level ?

You can disable HTTP 1.1 compliance if you wish.

> Darwin

Regards,
Josep
-- 
Josep L. Guallar-Esteve		Eastern Radiologists, Inc.
Systems and Network Administration  http://www.easternrad.com