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'Lockdown' exploit prevented in Internet Explorer accessing Sharepoint site?

Greg Francis

We have a couple of computers that are being blocked from a Sharepoint site with the Sophos message "'Lockdown' exploit prevented in Internet Explorer". These computers were able to access the same site yesterday. There were six Windows patches installed last night that may be contributing as some other computers where the patches haven't installed aren't experiencing the "'Lockdown' exploit prevented in Internet Explorer" block when getting to the exact same Sharepoint site.

These are the patches that were installed:

  • Cumulative security update for Internet Explorer: February 13, 2018 (KB4074736)
  • 2018-02 Security Only Quality Update for Windows 7 for x64-based Systems (KB4074587)
  • 2018-02 Security Monthly Quality Rollup for Windows 7 for x64-based Systems (KB4074598)
  • Security Update for Microsoft Office 2010 (KB4011707) 32-Bit Edition
  • Security Update for Microsoft Office 2010 (KB3114874) 32-Bit Edition
  • Security Update for Microsoft Outlook 2010 (KB4011711) 32-Bit Edition

I'm wondering if anyone else has encountered any issues with these patches in relation to Sharepoint and Sophos.



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  • 0

    I've encountered this a few times on different sites within the past week or so.  I've just been adding a global exception but if it keeps reoccuring for different sites that are legitimate, it'll become a nuisance.  Has anyone that submitted a ticket heard back from support?

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  • 0

    I've encountered this a few times on different sites within the past week or so.  I've just been adding a global exception but if it keeps reoccuring for different sites that are legitimate, it'll become a nuisance.  Has anyone that submitted a ticket heard back from support?

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  • 0 in reply to Timothy Frazier

    Timothy Frazier said:

    I've encountered this a few times on different sites within the past week or so.  I've just been adding a global exception but if it keeps reoccuring for different sites that are legitimate, it'll become a nuisance.  Has anyone that submitted a ticket heard back from support? 

     

    I've submitted a ticket with a pretty good description of the issue along with the SDU dump. I'm still waiting for them to analyze it and get back to me. 

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