August 2017 Security Updates Summary

It’s the second Tuesday of August and Microsoft and Adobe made available their monthly scheduled security updates.

Microsoft resolved 48 vulnerabilities in total more formally known as CVEs (defined). These are detailed within Microsoft’s new Security Updates Guide.

This month there is only 1 Known Issue for this month’s Microsoft updates.


Separately Adobe made available four security bulletins for the following products:

Adobe Digital Editions (priority 2, 2x critical, 7x important CVEs)

Adobe Experience Manager (priority 2, 1x important, 2x moderate CVEs)

Adobe Acrobat/Reader (priority 2, 43x critical, 24 important CVEs)

Adobe Flash (priority 1, 1x critical, 1x important CVEs)

The priority ratings are explained in this link. Depending on which version of Flash Player you have, please review the Adobe security bulletin or Microsoft bulletin (the link includes “April” in the URL but it is not a typo) as appropriate and apply the recommended updates. Google Chrome users should have the updated version installed automatically later this week (if not already available).

If you use any of the above-mentioned Adobe products, please review the security bulletins linked to above and apply the necessary updates. As per the established process the Flash update should be installed as soon as possible since exploit kits (defined) tend to take advantage of newly disclosed vulnerabilities very quickly.

Of note this month is the particularly large Adobe Acrobat/Reader update and the very small Flash Player update. The number of vulnerabilities resolved in last month’s Flash Player update was also small but it is too early to tell if vulnerability is moving away from Flash Player due to Adobe’s recent notice of their intention to de-commission Flash Player in 2020.

Update:12th September 2017:
Adobe last month updated their Adobe Acrobat and Acrobat Reader again after the availability of the initial patches in order resolve a regression (defined). Please ensure your installations of these products are updated to the version detailed by Adobe in their updated security bulletin (or are more recent than those listed in the bulletin).

Thank you.

You can monitor the availability of security updates for most your software from the following websites (among others) or use Secunia PSI:
US Computer Emergency Readiness Team (CERT) (please see the “Information on Security Updates” heading of the “Protecting Your PC” page):

A further useful source of update related information is the Calendar of Updates. News/announcements of updates in the categories of General SoftwareSecurity Software and Utilities are available on their website. The news/announcements are very timely and (almost always) contain useful direct download links as well as the changes/improvements made by those updates (where possible).

If you like and use it, please also consider supporting that entirely volunteer run website by donating.

If you use any of the above software, please install the appropriate updates as soon as possible. Steps for installing updates for Windows are provided on the “Protecting Your PC” page.

For this month’s Microsoft updates, I will prioritize the order of installation for you below:
Critical severity:

Windows Search

Microsoft Windows Hyper-V

Windows Scripting Engine (affecting Edge, Internet Explorer and Office)

Microsoft Edge and Internet Explorer

Windows PDF Viewer


Important severity:

Windows Font Engine

Please install the remaining updates at your earliest convenience.

As always you can find detailed information on the contents of each security bulletin within ComputerWorld’s Patch Tuesday Debugged column.

Another security pre-caution that you may wish to take if you have Microsoft EMET (please ensure your version of EMET is the most recent version 5.52) installed is to use it to protect you from Adobe Flash being used to exploit vulnerabilities when you open a Microsoft Office document or Adobe PDF file. I provide recommendations of how to do this at the end of the July 2015 Update Summary. Please note that Microsoft EMET will be out of support on the 31st of July 2018.

As noted in this new blog post, parts of EMET are to become available in the Creator’s Fall Update for Windows 10 set for release in September 2017.

As usual; I would recommend backing up the data on any device for which you are installing updates to prevent data loss in the rare event that any update causes unexpected issues.

Thank you.

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