Windows Client Guidance against speculative execution vulnerabilities

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  1. Posts : 19,209
    W11+W11 Developer Insider + Linux
       #100

    Is there an example of it being exploited in malicious manner ?
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  2. Posts : 49
    win10 home 64 bit
       #101

    you'll probably have to ask nsa and all.
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  3. Posts : 19,209
    W11+W11 Developer Insider + Linux
       #102

    pzhndal said:
    you'll probably have to ask nsa and all.
    Well, beside NSA, no doubt about them.
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  4. Posts : 2,295
    Win10 202H
       #103

    VBF said:
    I checked the ASUS Global
    link and I'm assuming that they won't provide updates for the "Asus Z87-A Motherboard - Haswell CPU only" which despite being 2013 "vintage" is my main PC and is still as powerful as i need, what with the 16GB memory and SSD.
    If anyone knows differently please respond
    That is there list so far so I am hoping it expands this week , not too worried since ,I haven't heard of any actually exploits yet.

    I found a small app on the TECHNET site so you don't need to use PowerShell for this though , someone turn the PS Scripts into an .exe so it will run on it's own...

    KB.


    Windows Client Guidance against speculative execution vulnerabilities Attached Files
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  5. Posts : 573
    Windows 10 Pro 19043.1081
       #104

    @Kbird
    Great find on the SpeculationControlEXE.zip. Can you please post a link to Technet? I know that the file is all ready attached, but I would also like a link in Technet as well.
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  6. Posts : 2,826
    Windows 10 Pro X64
       #105

    Hi,

    Basically, we're all just waiting for the hardware part to be patched.

    Cheers,
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  7. Posts : 2,295
    Win10 202H
       #106

    tracit99 said:
    @Kbird
    Great find on the SpeculationControlEXE.zip. Can you please post a link to Technet? I know that the file is all ready attached, but I would also like a link in Technet as well.
    It's in TechNet Script Center

    The FILE AT THE TOP IS AN EMPTY ZIP at least for me, the one I posted is in
    the Comments of this post by a guy called Andy-Bentley under EXE version of the SCRIPT at 11.28AM :

    Q and A - Speculation Control Validation PowerShell Script

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  8. Posts : 573
    Windows 10 Pro 19043.1081
       #107

    Thanks @Kbird. That is exactly what I needed and you are right about the zip at the top. It is a zero byte file. The exe will be helpful for those not familiar with MS Powershell. I found out that it needs Powershell 2.0 or higher and I also had to install .Net 3.5.
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  9. Posts : 2,295
    Win10 202H
       #108

    tracit99 said:
    Thanks @Kbird. That is exactly what I needed and you are right about the zip at the top. It is a zero byte file.
    The ZIP at the top was just the script for IT Managers etc , my guess is the file was open when they tried to zip it.....

    There are actually 3 versions of the .exe now depending on which level of the . Net Framework you have, ie:


    This is a link to three versions of the EXE version of the script, compiled respectively
    for .NET versions 2.0, 3.0/.5 and 4.0/.5. It also contains the .ps1 script.

    Folks having trouble with the module and PS 2.0 - you might find an EXE works for you.

    I'm not saying this is a better option than using modules, it's just an alternative approach
    and slightly more portable. You still need PS and .NET as-per PS2EXE documentation
    as it's more of a wrapper than a true standalone EXE.
    Last edited by Kbird; 08 Jan 2018 at 17:30.
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  10. qao
    Posts : 5
    10
       #109

    VBF said:
    I checked the ASUS Global
    link and I'm assuming that they won't provide updates for the "Asus Z87-A Motherboard - Haswell CPU only" which despite being 2013 "vintage" is my main PC and is still as powerful as i need, what with the 16GB memory and SSD.
    If anyone knows differently please respond
    There's an unofficially released microcode update 23 20/11/2017 for the Haswell line that has a partial fix for spectre.

    Improved overclocking for Haswell with updated microcode (+ update CPU microcode through software)

    I'm rocking it right now on my rig: 4670K + Maximus VI Hero (Z87) and its been reported to work on these so far:

    ASRock Z87 Extreme6
    ASRock Z97 Extreme4
    ASRock Z97 OC Formula
    ASUS Maximus Hero Z87
    ASUS Maximus VII Impact
    AW17 R1/Ranger/R5
    Gigabyte Z87X-UD4H
    MSI Z97 MPOWER MAX AC
    MSI Z87-GD65 Gaming
    MSI Z97 Gaming 5
    MSI Z97 G45 Gaming

    Unfortunately your mobo lacks the "risk free" ASUS FLASHBACK feature where you can flash your bios when the computer is turned off so there's a chance you'll brick it.

    Everyone is better off waiting for the official release and finalized code.
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