[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 26 Sep 2014 00:11:21 +0200
From: Hanno Böck <hanno@...eck.de>
To: oss-security@...ts.openwall.com
Subject: Re: nss RSA forgery (CVE-2014-1568)
On Thu, 25 Sep 2014 23:17:58 +0200
Hanno Böck <hanno@...eck.de> wrote:
> Some more info, but not much:
> http://www.intelsecurity.com/advanced-threat-research/
>
> Initially I thought this is probably not such a big deal because the
> bleichenbacher attack requires e to be very small (like e=3 or e=4)
> and everyone uses e=65537 these days. But it seems I was wrong on
> that, lots of CAs still with e=3.
>
Correcing me: There are not lots of, but exactly 6.
Camerfirma_Chambers_of_Commerce_Root.pem: 3 (0x3)
Camerfirma_Global_Chambersign_Root.pem: 3 (0x3)
Digital_Signature_Trust_Co._Global_CA_1.pem: 3 (0x3)
Digital_Signature_Trust_Co._Global_CA_3.pem: 3 (0x3)
Go_Daddy_Class_2_CA.pem: 3 (0x3)
Starfield_Class_2_CA.pem: 3 (0x3)
Some background: having very small exponents for RSA isn't a problem if
you do everything right, but it vastly increases the likelyhood of
issues like this popping up. It'd seem like a good safeguard to get rid
of all e=3 keys.
--
Hanno Böck
http://hboeck.de/
mail/jabber: hanno@...eck.de
GPG: BBB51E42
Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)
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.
