Admins, heads up! Another Patch Tuesday security hole has a public exploit

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A week ago today, I warned those of you running SQL Server systems to install the latest Patch Tuesday patches. In particular, CVE-2020-0618 was crack
[See the full post at: Admins, heads up! Another Patch Tuesday security hole has a public exploit]

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JCCWsusser, Mr. Natural

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[PerthMike]

The Master Patch List for Exchange doesn’t list anything beyond November 2019 for Exchange…?

No matter where you go, there you are.

• This reply was modified 3 years, 7 months ago by PerthMike.

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Hi PerthMike,

The reason for this, and this is something I just realized YESTERDAY, is that as of Exchange 2013 you no longer receive cumulative updates from WSUS or Microsoft Update. You have to download them from Microsoft manually through this site:

https://docs.microsoft.com/en-us/Exchange/new-features/updates?view=exchserver-2019

Woody and/or Patch Lady, if you can spell that out in a fresh post I bet a LOT of admins will be surprised to hear that they haven’t received any CU updates since their initial Exchange 2013-2019 install!

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Does this definitely apply to Exchange 2010?

https://eightwone.com/2020/02/13/security-updates-exchange-2010-2019-2/

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Yes. Update rollup 30 fixes this issue, along with others.

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Ghosties

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****Caution Exchange 2016 Installs *****

Exchange 2016 CU15 applied fine.  The patch KB4536987 broke OWA and killed search across the boards in the web client and desktop client.  Uninstalling the KB brought OWA back.  Stopping the search services and deleting the indexes brought the search back.

Exchange 2016 users should test before installing on production servers.

Please let me know how your update went.

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To answer my own question …… I guess I thought I was admin……I had better double check on the next attempt.  According to the article:
When you try to manually install this security update by double-clicking the update file (.msp) to run it in Normal mode (that is, not as an administrator), some files are not correctly updated.
When this issue occurs, you don’t receive an error message or any indication that the security update was not correctly installed. However, Outlook Web Access (OWA) and the Exchange Control Panel (ECP) may stop working.

This issue occurs on servers that are using user account control (UAC). The issue occurs because the security update doesn’t correctly stop certain Exchange-related services.

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Final notes:  Updating through Windows Update works better than downloading the patch manually.  If you have WSUS, just approve the patch and apply it.  It can be installed while the server is running.  Then, pick a reboot time and you will be golden.

If you do decide to use the manual patch, follow the directions explicitly.

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StoopidMonkey wrote:

Hi PerthMike,

The reason for this, and this is something I just realized YESTERDAY, is that as of Exchange 2013 you no longer receive cumulative updates from WSUS or Microsoft Update. You have to download them from Microsoft manually through this site:

https://docs.microsoft.com/en-us/Exchange/new-features/updates?view=exchserver-2019

Woody and/or Patch Lady, if you can spell that out in a fresh post I bet a LOT of admins will be surprised to hear that they haven’t received any CU updates since their initial Exchange 2013-2019 install!

Well yeah, but I’m not looking for a CU, I’m looking for the bi-monthly/quarterly security updates that Microsoft was still posting via WSUS, etc. Those were being used by MS to patch emergency issues like this.

Those suddenly seem to have stopped as of September.

I can’t be applying a full CU every quarter, taking my server down for a couple of hours, and hoping that this “service pack” doesn’t break more than it fixes.

No matter where you go, there you are.

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dportenlanger wrote:

****Caution Exchange 2016 Installs *****

Exchange 2016 CU15 applied fine.  The patch KB4536987 broke OWA and killed search across the boards in the web client and desktop client.  Uninstalling the KB brought OWA back.  Stopping the search services and deleting the indexes brought the search back.

Exchange 2016 users should test before installing on production servers.

Please let me know how your update went.

Grrr… Dear Microsoft, medium business doesn’t have capacity for a “lab environment” to test such c****y updates.

And if KB4536987 breaks OWA and search, that means that the issue is still unresolved by Microsoft, right? Greaaaaaaaat!

No matter where you go, there you are.

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We tried to install the update for Exchange Server 2013 (Security Update For Exchange Server 2013 CU23 (KB4536988), but it wouldn’t install. We are running it on Windows Server 2012 R2, and that OS is not listed as a supported OS under System Requirements.

Supported Operating System

Windows Server 2008 R2 SP1, Windows Server 2008 R2, Windows Server 2012, Windows 7 Professional 64-bit, Windows Server 2008 R2 Standard

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