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Guru3D.com » News » AMD addresses SEV security vulnerability in Epyc CPUs with firmware update

AMD addresses SEV security vulnerability in Epyc CPUs with firmware update

by Hilbert Hagedoorn on: 06/28/2019 07:51 AM | source: phoronix | 12 comment(s)
AMD addresses SEV security vulnerability in Epyc CPUs with firmware update

A month or so ago. Cfir Cohen, a member of the Google Cloud security team, alerted AMD about a problem with the Secure Encrypted Virtualization (SEV) functionality of the Epyc processors. This vulnerability could allow an attacker to intercept a secret key that could give access to isolated virtual machines.

This specific vulnerability has been patched but did require a firmware update. The update is named CVE-2019-9836 and it is of course strongly recommended to install that update as quickly as possible. The news about the leak was  announced after the problem could be identified and resolved, and that's the way it should go.

At AMD, security remains a top priority and we continue to work to identify any potential risks for our customers. Through ongoing collaboration with industry researchers AMD became aware that, if using the user-selectable AMD secure encryption feature on a virtual machine running the Linux operating system, an encryption key could be compromised by manipulating the encryption technology’s behavior. AMD released firmware-based cryptography updates to our ecosystem partners and on the AMD website to remediate this risk.



AMD addresses SEV security vulnerability in Epyc CPUs with firmware update




« Free to grab: Last Day of June at Epic Games Store · AMD addresses SEV security vulnerability in Epyc CPUs with firmware update · Gigabyte launches high-end X570 Aorus Master motherboard »

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BlackZero
Senior Member



Posts: 8878
Joined: 2007-06-17

#5685156 Posted on: 06/28/2019 08:20 AM


fantaskarsef
Senior Member



Posts: 13100
Joined: 2014-07-21

#5685163 Posted on: 06/28/2019 09:08 AM
Huh...

if using the user-selectable AMD secure encryption feature on a virtual machine running the Linux operating system


Kaarme
Senior Member



Posts: 2951
Joined: 2013-03-10

#5685185 Posted on: 06/28/2019 10:43 AM
IMAGE


What begins? You need to begin a round of updating Epyc servers' firmwares? I guess nobody would be looking forward to such a task, huh.

BlackZero
Senior Member



Posts: 8878
Joined: 2007-06-17

#5685197 Posted on: 06/28/2019 11:21 AM
What begins? You need to begin a round of updating Epyc servers' firmwares? I guess nobody would be looking forward to such a task, huh.


I can't make out what you're trying to say, but I'm glad you tried.

Better than dead silence.

Kaarme
Senior Member



Posts: 2951
Joined: 2013-03-10

#5685215 Posted on: 06/28/2019 01:10 PM
I can't make out what you're trying to say, but I'm glad you tried.

Better than dead silence.

That makes two of us since I also couldn't figure out what it is that you believe will begin.

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