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Reply-To:	Brian DOT Inglis AT Shaw DOT ca
Subject:	Re: SSL not required for setup.exe download
To:	cygwin AT cygwin DOT com
References:	<CANSoFxtW0Jb1M5KfkFGGOxec_D8ysyYCrnk_PXWjHobLDXZauQ AT mail DOT gmail DOT com>
From:	Brian Inglis <Brian DOT Inglis AT Shaw DOT ca>
Openpgp:	preference=signencrypt
Message-ID:	<1a840c2e-55ac-0ab4-66c4-a1f6a2c4f81a@Shaw.ca>
Date:	Sun, 10 Mar 2019 08:16:18 -0600
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In-Reply-To:	<CANSoFxtW0Jb1M5KfkFGGOxec_D8ysyYCrnk_PXWjHobLDXZauQ@mail.gmail.com>

On 2019-03-09 21:54, Archie Cobbs wrote:
> The FAQ states:
>     The Cygwin website provides the setup program (setup-x86.exe or
> setup-x86_64.exe) using HTTPS (SSL/TLS).
> While this is true, it's not mandatory.
> If one happens to go to HTTP://www.cygwin.com instead of
> HTTPS://www.cygwin.com, then neither the page you are viewing (which
> contains the setup.exe download link), nor the setup.exe download link
> itself are secured via SSL.
> So someone who just types "cygwin.com" into the browser location bar
> and clicks on the setup.exe link is vulnerable to a MTM attack.
> It would be safer if http://www.cygwin.com always redirected you to
> https://www.cygwin.com, where the page and the link are SSL.
> Is there any reason not to force this redirect and close this security hole?

The whole sourceware.org site include cygwin.com uses HSTS which compliant
supporting clients can use to switch to communicating over HTTPS.
Clients which are not compliant or don't support HTTPS may still download the
programs and files.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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