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AMD processors from 2011 to 2019 vulnerable to two new attacks

Discussion in 'CPUs' started by b00merang69, Mar 7, 2020.

  1. koooowweeee

    Soldato

    Joined: Jan 13, 2010

    Posts: 5,583

    Location: Manchester

    Quick everyone jump back to intel :D
     
  2. Wulfster

    Gangster

    Joined: Feb 12, 2016

    Posts: 402

    Location: 2 metres away

    :D:D

    Wulf
     
  3. jigger

    Capodecina

    Joined: May 28, 2007

    Posts: 12,630

    You almost asked a reasonable question too.
     
  4. Panos

    Perma Banned

    Joined: Nov 22, 2009

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    Location: Under the hot sun.

    No need. Because the day this ludicrous paper came out the one bellow was published also.... But somehow was "missed" I wonder why :rolleyes:

    Researchers find new Intel security vulnerability that is “impossible to fix”
    https://www.kitguru.net/components/...rity-vulnerability-that-is-impossible-to-fix/
     
  5. CHokKA

    Mobster

    Joined: May 17, 2004

    Posts: 3,657

    Location: Home

    Your comment would be mildly amusing if it wasn't for the fact that prior to November 2019 I had Intel hardware. A Core i5 3570k which served me well for years. I moved to AMD because there's no denying their superiority right now. I'd have been a fool to buy Intel. Especially with all of their current security flaws.
     
  6. IT Troll

    Wise Guy

    Joined: Jun 15, 2005

    Posts: 2,451

    Location: Edinburgh

    You mean the one we discussed two days ago?
    https://forums.overclockers.co.uk/posts/33399627/

    This paper originates from the same University (and some of the same researchers) who discovered the Meltdown & Spectre vulnerabilities. But this AMD focused paper is deemed "ludicrous" and the work of Intel shills. :rolleyes:
     
  7. gavinh87

    Mobster

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    Location: West Midlands

    :D:D:D
     
  8. hyperseven

    Soldato

    Joined: May 1, 2013

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    Location: M28

    Panos pwned :p

    Also, 'no need'. So it does exist ;)
     
    Last edited: Mar 8, 2020
  9. Panos

    Perma Banned

    Joined: Nov 22, 2009

    Posts: 13,200

    Location: Under the hot sun.

    Have you both understood what this vulnerability is on the AMD? They isolated the L1 design and simulated an attack. Ignoring completely the rest of the CPU how would react on such attack. That is why is ludicrous.

    Thats is far different than exploiting the CPU as a whole as happened with Intel.

    In addition point the coincidence the same day post papers were released. One with a critical flaw (Intel) that cannot be fixed, the other that can never happen.

    Ofc it would be my bad, spending my time in a technical forum which average member has no clue of what he reads....
     
  10. humbug

    Caporegime

    Joined: Mar 17, 2012

    Posts: 34,059

    So they faked it ^^^^ would love to know how much Intel paid to result in this garbage??? :D A real attack not work?
     
  11. pete910

    Mobster

    Joined: Oct 3, 2013

    Posts: 2,784


    You made it read like a specific attack vector which is why I asked
     
  12. b00merang69

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    Humbug take of your rose coloured glasses, the results are from the same source as the Intel flaws, you cannot choose to believe one set of results and not the other because it fits your agender, Panes post means nothing as it does not matter if this will effect many people or not as the Intel one will not effect home users.

    So Panos is now an scientist/engineer who understands CPU/GPU architecture?
     
  13. jigger

    Capodecina

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    Posts: 12,630

    TBF, you can’t seriously compare this to the Intel report.
     
  14. b00merang69

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    I never said I was, does it matter what is more an issue than the other both are issues and again will not effect the majority of home users.

    Like someone above stated, when its Intel bring out the pitch forks and when its AMD its not a big deal...;)
     
  15. pete910

    Mobster

    Joined: Oct 3, 2013

    Posts: 2,784

    To be fair they do say that they have reversed engineered the l1 cache hashes which are undocumented. so it's simulated to the extent of what they have managed to find out.
     
  16. humbug

    Caporegime

    Joined: Mar 17, 2012

    Posts: 34,059

    They didn't attack the CPU, they ran a simulation on the L1 Cache, that's like simulating an attack on a vault by simulating a bypass on the inconvenient vault door.

    I can simulative starting your car if a ignore the key.
     
  17. Rroff

    Man of Honour

    Joined: Oct 13, 2006

    Posts: 68,944

    LOL.

    Funny enough when it was pointed out the other way around with other flaws certain people wouldn't have it! infact I took quite a lot of **** posting from certain people who are posting in this thread for pointing out the same kind of thing and purely from an academic perspective on my part (I even pointed out at the time how it could go on to be a bigger issue).

    And a reminder that some of these Intel flaws were built upon baby steps consisting of exactly what you are talking about - not to say that applies the same for AMD necessarily but don't forget that factor.
     
  18. CAT-THE-FIFTH

    Capodecina

    Joined: Nov 9, 2009

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    Location: Planet Earth

    If people are petrified over this,they would be even more petrified about the latest Intel flaw,which is not apparently fixable:
    https://arstechnica.com/information...psets-have-a-concerning-flaw-thats-unfixable/

    Also,Intel also had an L1 cache flaw discovered in January called CacheOut:
    https://www.theregister.co.uk/2020/01/28/intel_processor_data_leak/
    https://www.pcworld.com/article/351...ntel-processors-with-a-fix-arriving-soon.html

    AMD is not vulnerable to that L1 cache flaw though. However,Intel was given prior warning though so they could try and attempt some fixes.
     
    Last edited: Mar 9, 2020
  19. Orange Nexus

    Hitman

    Joined: Sep 21, 2018

    Posts: 895

    Cacheout bypasses mitigations for Fallout and Zombieload. No known fixes for it yet.
     
  20. LoadsaMoney

    Caporegime

    Joined: Jul 8, 2003

    Posts: 28,873

    Location: In a house

    Better go back to Intel

    Oh wait...........

    :D