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Patching the recent vulnerability in microsoft malware protecton engine, how?


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#1 rp88

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Posted 14 December 2017 - 04:54 PM

I'm talking here as someone with a windows 8.1 system, I do not use microsoft's own defender antivirus but avast instead. And I keep windows updates set to "check automatically but ask me whether I want to download". I know that there is a very major problem with the microsoft malware protection engine, as reported in numerous news stries of the last week or so, one where it ends up running malware which it is trying to detect.

Most of the news storis said a fix would be downloaded automatically, but as someone who isn't using microsoft's own antivirus (it self-disables when any other AV is put on a system) it hasn't downloaded through there, and I haven't seen it offered as a windows update through the KB XXXXXXX method. How do I patch this on my system, or is it irrelevant because I'm using avast as my antivirus instead of microsoft's offering?

Thank you

Edited by rp88, 14 December 2017 - 04:54 PM.

Back on this site, for a while anyway, been so busy the last year.

My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB

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#2 JohnC_21

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Posted 14 December 2017 - 05:11 PM

The engine update is done automatically during the normal virus definition update process.

 

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11937

 

Edit: If you don't use MSE or WD then there is nothing to worry about. 


Edited by JohnC_21, 14 December 2017 - 05:14 PM.


#3 quietman7

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Posted 14 December 2017 - 05:35 PM

I'm talking here as someone with a windows 8.1 system, I do not use microsoft's own defender antivirus but avast instead...

Just to clarify, starting with Windows 10 Creators Update (v1703), Windows Defender was renamed Windows Defender Antivirus...see What's new in Windows Defender for Windows 10 Creators Update.

If you are using Windows 8.1, then you just have Windows 8 Defender.
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#4 rp88

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Posted 14 December 2017 - 06:34 PM

Thanks for the answers.
Back on this site, for a while anyway, been so busy the last year.

My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB

#5 quietman7

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Posted 15 December 2017 - 07:08 AM

You're welcome on behalf of the Bleeping Computer community.
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