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Date: Fri, 7 Nov 2014 10:24:26 +1100
From: Michael Samuel <mik@...net.net>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request: Qt Creator fails to verify SSH host key

On 7 November 2014 00:04, Jason A. Donenfeld <Jason@...c4.com> wrote:
> I reported this bug to the development team, alongside another bug
> involving cipher-suite compatibility with OpenSSH 6.7 (no CTR modes). They
> marked the latter as priority 1, and fixed it within 24 hours. The former,
> however, has received a bit more of a hesitant reaction. The most recent
> vendor feedback seems to indicate they're not super interested in
> implementing this.

This is a serious bug (it certainly circumvents the security of
OpenSSH), but I think
the proposed fix doesn't fit.

What might be a better solution is to store the public key for all
devices, and accept
if it matches any device you've talked to before.  On discovering a
new device, it shows
the fingerprint and prompts for a name/description.

Then you can revoke devices in some other part of the UI when you need
to clean up.

Regards,
  Michael

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