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Message-ID: <b3ee3010-cf03-4ea5-96c2-9fccb7eede17@SystematicSW.ab.ca>
Date: Sat, 3 May 2025 13:27:17 -0600
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Subject: Re: Signing cygwin.com binaries with signtool by default ?
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From: Brian Inglis via Cygwin <cygwin@cygwin.com>
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Cc: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
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On 2025-05-03 12:49, Roland Mainz via Cygwin wrote:
> On Sat, May 3, 2025 at 8:21 PM Roland Mainz <roland.mainz@nrubsig.org> wrote:
>> Is it somehow possible that the CI+Release binaries (*.exe, *.dll) can
>> be signed with signtool
>> (https://learn.microsoft.com/en-us/windows/win32/seccrypto/signtool) ?
>> It seems that Microsoft Defender has become overly aggressive to some
>> Cygwin binaries (mostly /usr/bin/hostname, /usr/bin/find, /usr/bin/tar
>> etc.) in the last couple of weeks and just blocks them.
>>
>> Our IT supports that they can "whitelist" binaries based on their
>> cryptographic signature... but neither the binaries from the CI nor
>> the Release binaries have any signatures...
> 
> BTW: The Windows Defender rule which causes /usr/bin/find.exe,
> /usr/bin/hostname.exe etc. to be blocked is "Block use of copied or
> impersonated system tools" (C0033C00-D16D-4114-A5A0-DC9B3A7D2CEB) ...

Where can we see these rules?

Can your paid IT support not modify those rules to bypass Cygwin installs?

And maybe share how to with the open source community?

Presumably we are providing you with a valuable commodity with valuable utility 
as well as a valuable freedom to do with it as you like.

Perhaps you could repay that valuable freedom, by using some of your valuable 
resources to figure out and implement workarounds to proprietary barriers to our 
freedom to use that commodity, and share those with the community!

BTW those MS Windows provided utilities are badly outdated, and many have 
security risks with CVEs against them, so should be replaced with the latest 
upstream Windows builds ASAP.

Perhaps MS should be lambasted for blocking users who choose to install and use 
versions of utilities from sources which are more current than those provided by 
MS, with the security risks eliminated by unpaid volunteers who support secure 
software which offers their users freedom and do it in their free time!

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

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher  but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

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