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Date: Wed, 25 Apr 2018 11:11:14 +0530
From: Huzaifa Sidhpurwala <huzaifas@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2018-0737 OpenSSL: RSA key generation follows
several non constant time code paths
On 04/24/2018 09:18 PM, Billy Brumley wrote:
>>> Look for our preprint on http://eprint.iacr.org/ soon -- working title
>>> is "One Shot, One Trace, One Key: Cache-Timing Attacks on RSA Key
>>> Generation". We'll update the list with the full URL once it's posted.
>>>
>>
>>
>> Can you post a link to the draft here please?
>
> The preprint is now up: https://eprint.iacr.org/2018/367
>
>> The attack vector is not clear, does the attacker need to be on the same
>> physical machine or is this a cross-vm attack?
>
> https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-0737
>
> Your statement is pretty accurate. (Although I fail to see the
> difference between physical machine and cross-vm.)
>
Physical machine implies, the attacker and victim is on the same host
(real computer or a vm). Cross-vm implies attacker and the victim can be
on two different virtual machines, running on the same hypervisor.
> BBB
>
--
Huzaifa Sidhpurwala / Red Hat Product Security Team
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