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Message-ID: <20180514102951.GD18567@256bit.org>
Date: Mon, 14 May 2018 12:29:51 +0200
From: Christian Brabandt <cb@...bit.org>
To: oss-security@...ts.openwall.com
Subject: Re: PGP/MIME and S/MIME mail clients vulnerabilities
On Mo, 14 Mai 2018, Yves-Alexis Perez wrote:
> I guess most people have already saw this, but just in case, it seems that a
> vulnerability in PGP/MIME and S/MIME handling in various mail clients will be
> published tomorrow.
>
> Debian Security team didn't get any private information yet, but there have
> been multiple twitter threads and blog posts published already:
>
> https://twitter.com/seecurity/status/995906576170053633
> https://arstechnica.com/information-technology/2018/05/critical-pgp-and-smime-
> bugs-can-reveal-encrypted-e-mails-uninstall-now/
> https://www.eff.org/deeplinks/2018/05/attention-pgp-users-new-vulnerabilities-
> require-you-take-action-now
>
> GnuPG has posted a tweet (https://twitter.com/gnupg/status/995931083584757760)
> indicating it's likely a vulnerability in mail clients themselves and not in
> the protocol, and which is related to HTML mail handling.
>
> The vulnerabilities apparently enable an attacker to decrypt previous mails,
> but my (wild) guess is that the attack actually requests decryption from the
> mail client (which has access to the private key), rather than by actually
> decrypting itself.
Looks like details have just been published:
https://efail.de/
Best,
Christian
--
Ein Flirt ohne tiefere Absicht ist ungefähr so sinnvoll wie ein
Fahrplan ohne Eisenbahn.
-- William Somerset Maugham
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