[<prev] [next>] [day] [month] [year] [list]
Message-ID: <55E702EB.4040607@redhat.com>
Date: Wed, 2 Sep 2015 16:08:43 +0200
From: Florian Weimer <fweimer@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Factoring RSA Keys With TLS Perfect Forward Secrecy
It turns out that Lenstra's 1996 side-channel attack on the RSA-CRT
optimization still works against some TLS servers:
<https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/>
<https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf>
Fortunately, none of the key leaks were attributed to publicly available
free software. OpenSSL upstream and NSS already have RSA-CRT hardening.
OpenJDK was updated in April 2015, as CVE-2015-0478.
libgcrypt upstream received the hardening very recently:
<http://lists.gnupg.org/pipermail/gcrypt-devel/2015-September/003553.html>
For Go, I opened an issue: <https://github.com/golang/go/issues/12453>
Nettle would also benefit from RSA-CRT hardening. I started a
discussion here:
<http://thread.gmane.org/gmane.comp.encryption.nettle.bugs/1359>
I don't think CVE assignments are needed (although the OpenJDK hardening
received one).
--
Florian Weimer / Red Hat Product Security
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
