Tag Archives: Microsoft IIS

March 2019 Update Summary

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Updated: 21st March 2019
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Two of the vulnerabilities patched by Microsoft (CVE-2019-0797CVE-2019-0808) were zero day (defined) vulnerabilities being actively exploited in the wild. Four other vulnerabilities were publicly known (CVE-2019-0683CVE-2019-0754CVE-2019-0757 and CVE-2019-0809).

Separately the Google Chrome vulnerability mentioned below namely CVE-2019-5786 was also being exploited by attackers.

After publishing my original post; Adobe and Microsoft jointly reported that while a newer version (32.0.0.156) of Flash Player was made available it only resolves non-security bugs.

I have updated the suggested installation order (below) to reflect this new information. Thank you.

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Original Post:
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As scheduled; earlier today Microsoft and Adobe made available their security updates. Microsoft addressed 65 vulnerabilities (more formally known as CVEs (defined)) with Adobe resolving 2 vulnerabilities.

For Adobe; if you have not already done so; if you manage an installation of Adobe ColdFusion or know someone who does, please apply the necessary updates made available earlier this month. That update addressed a single priority 1 zero day (defined) vulnerability being exploited in the wild. Today’s Adobe updates are as follows:

Adobe Digital Editions: 1x priority 3 CVE resolved

Adobe Photoshop CC: 1x priority3 CVE resolved

If you use the affected Adobe products; please install their remaining priority 3 updates when you can.

This month’s list of Known Issues is now sorted by Microsoft within their monthly summary page and applies to all currently supported operating systems:

KB4489878          Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Monthly Rollup)

KB4489881          Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)

KB4489882          Windows 10 version 1607, Windows Server 2016

KB4489883          Windows 8.1, Windows Server 2012 R2 (Security-only update)

KB4489884          Windows Server 2012 (Security-only update)

KB4489885          Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Security-only update)

KB4489891          Windows Server 2012 (Monthly Rollup)

KB4489899          Windows 10 version 1809, Windows Server 2019

You can monitor the availability of security updates for most your software from the following websites (among others) or use one of the utilities presented on this page:

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US Computer Emergency Readiness Team (CERT) (please see the “Information on Security Updates” heading of the “Protecting Your PC” page):

https://www.us-cert.gov/

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.

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For this month’s Microsoft updates, I will prioritize the order of installation below:
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Microsoft Edge and Internet Explorer (multiple versions of Edge and IE affected)

Windows Kernel: CVE-2019-0797CVE-2019-0808

Windows DHCP Client: CVE-2019-0697 , CVE-2019-0698 , CVE-2019-0726

Microsoft XML: CVE-2019-0756

Scripting Engine: CVE-2019-0592 , CVE-2019-0746 , CVE-2019-0639 , CVE-2019-0783 , CVE-2019-0609 , CVE-2019-0611 , CVE-2019-0666 , CVE-2019-0769 , CVE-2019-0665 , CVE-2019-0667 , CVE-2019-0680 , CVE-2019-0773 , CVE-2019-0770 , CVE-2019-0771 , CVE-2019-0772

Visual Studio Remote Code Execution Vulnerability: CVE-2019-0809

Microsoft Active Directory: CVE-2019-0683

NuGet Package Manager Tampering Vulnerability: CVE-2019-0757

Windows Denial of Service Vulnerability: CVE-2019-0754

Microsoft Dynamics 365: a privilege escalation vulnerability (defined) has been addressed (this product is also widely deployed)

If you use Microsoft IIS (Internet Information Services), please review advisory: ADV190005

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Please install the remaining updates at your earliest convenience.

As always; 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. I have provided further details of updates available for other commonly used applications below.

Thank you.

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Google Chrome:
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Google released Google Chrome version 72.0.3626.121 to address a single zero day (defined) vulnerability under active exploit. The vulnerability was a high severity use-after-free (defined) flaw in Chrome’s FileReader API (defined) which could have led to information disclosure of files stored on the same system as Chrome is installed.

Google Chrome updates automatically and will apply the update the next time Chrome is closed and then re-opened. Chrome can also be updated immediately by clicking the Options button (it looks like 3 stacked small horizontal lines, sometimes called a “hamburger” button) in the upper right corner of the window and choosing “About Google Chrome” from the menu. Follow the prompt to Re-launch Chrome for the updates to take effect.

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Notepad++:
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Notepad++ 7.6.4 was released on the 6th of March resolving 8 security issues. This version follows another from January which resolved 7 other vulnerabilities. If you use Notepad++, please update to the newest version to benefit from these security fixes.

Notepad++ 7.6.6 was released to resolve a critical regression in 7.6.5 which caused Notepad++ to crash. Version 7.6.5 resolved a further 6 security vulnerabilities.

If you use Notepad++, please update to the newest version to benefit from these reliability and security fixes.

Thank you.

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Mozilla Firefox
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Update: 25th March 2019: As detailed in the Pwn2Own 2019 results post; Mozilla released a further update for Firefox and Firefox ESR bringing their version numbers to 66.0.1 and 60.6.1 respectively. Both updates resolve 2x critical CVEs. Please consider updating to these versions as soon as possible.

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In the latter half of March Mozilla issued updates for Firefox 66 and Firefox ESR (Extended Support Release) 60.6:

Firefox 66.0: Resolves 5x critical CVEs (defined), 7x high CVEs, 5x moderate CVEs and 4x low CVEs

Firefox 60.6: Resolves 4x critical critical CVEs, 4x high CVEs and 2x moderate CVEs

Firefox 66 introduces better reliability (since crashes have been reduced) and improved performance. In addition, smooth scrolling has been added. The blocking of websites automatically playing audio or video content is now also present. These and other features are discussed in more depth here and here.

Details of how to install updates for Firefox are here. If Firefox is your web browser of choice, if you have not already done so, please update it as soon as possible to benefit from the above changes.

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VMware:
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VMware issued 2 security advisories during March:
Security Advisory 1: Addresses 2x important severity CVEs in the following products:

VMware Player
VMware Workstation Pro

Security Advisory 2: Addresses 1x moderate severity CVE in the following products:

VMware Horizon

If you use the above VMware products, please review the security advisories and apply the necessary updates.

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Putty:
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Putty, the open source and highly popular SSH (defined) client for Windows, was updated to version 0.71 in mid-March. It contains 8 security fixes (see below). They are a result of the bug bounties awarded through the EU-Free and Open Source Software Auditing (EU-FOSSA) (discussed previously in this post). Version 0.71 is downloadable from here.

If you use Putty, please update it to version 0.71. Thank you.

Security vulnerabilities fixed:

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Nvidia Geforce Experience Software:
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In late March , Nvidia released a security advisory for their Geforce Experience software for Windows. This update resolves 1 high severity vulnerabilities (as per their CVSS base scores). The necessary updates can be applied by opening Geforce Experience which will automatically updated it or the update can be obtained from here.

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GOG Galaxy
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Golden Old Games (GOG) has published an update for their popular game distribution platform GOG Galaxy. It resolves 2 critical vulnerabilities. Additionally, 2 high severity and 2x medium severity vulnerabilities were also resolved. These vulnerabilities are discussed in more detail in this Cisco Talos blog post and within this Kaspersky ThreatPost article. Please update GOG Galaxy to version 1.2.54.23 or later to resolve these vulnerabilities.

I don’t often post about vulnerabilities in gaming clients/gaming distribution clients but like any software; security updates can and are made available for them.

March 2017 Security Updates Summary

As you know Microsoft and Adobe released their scheduled monthly security updates. For Microsoft this release was anticipated especially since last month’s set was delayed.

Within the above linked to post I predicted Microsoft would make a large number of updates and they did just that. 17 bulletins in total are now available. These updates address 138 vulnerabilities listed within Microsoft’s new Security Update Guide. These vulnerabilities are more formally known as CVEs (defined).

Once again; there are no Known Issues listed within their March summary page. At the time of writing the IT Pro Patch Tuesday blog does not list any Known Issues. However, please check it before deploying your security updates just to be sure. As always, if any issues do arise, those pages should be your first places to check for solutions.
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Adobe issued two security bulletins today. One affecting Adobe Flash and the other for Adobe Shockwave Player. The Flash Player bulletin resolves 8x priority 1 vulnerabilities. While the Shockwave bulletin resolves 1x priority 2 vulnerability. These priority rating are explained in the previous link.

Depending on which version of Flash Player you have, please review the Adobe security bulletin or Microsoft bulletin as appropriate and apply the recommended updates. Google Chrome users will have the updated installed automatically alongside the updated version of Google Chrome which was made available last week.

If you use Flash or Adobe Shockwave, please review the security bulletins linked to above and apply the necessary updates. The Flash update should be installed as soon as possible since exploit kits (defined) tend to take advantage of newly disclosed vulnerabilities very quickly.

You can monitor the availability of security updates for most your software from the following websites (among others) or use Secunia PSI:

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US Computer Emergency Readiness Team (CERT) (please see the “Information on Security Updates” heading of the “Protecting Your PC” page):

https://www.us-cert.gov/

A further useful source of update related information is the Calendar of Updates. News/announcements of updates in the categories of General Software, Security 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.
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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.

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Update: 22nd March 2017:
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I wish to provide information on other notable updates from this month which I would recommend you install if you use these software products:

Notepad++ version 7.3.3

VideoLAN VLC Media version 2.2.5 (release currently in progress)

Malwarebytes Anti-malware version 3.0.6 CU3 (with Component package version: 1.0.75):
It is unknown how many vulnerabilities this addresses but this forum post mentions their resolution.

Malwarebytes Anti-malware version 3.0.6 CU4 addresses further vulnerabilities.

More details of the vulnerabilities resolved by Malwarebytes 3.0.6 CU3 have emerged. Researchers responsibly disclosed a technique which uses Microsoft’s Application Verifier to hijack an anti-malware application. More details of this vulnerability are available here and here.

Mozilla Firefox 52.0.1 (more details in this post on Pwn2Own 2017)

VMware Workstation 12.5.4 (relevant security advisories are here and here)

VMware ESXi, Fusion and VMware Workstation 12.5.5 (the relevant security advisory is here). This advisory resolves the vulnerabilities disclosed during Pwn2Own 2017 for the above listed products.

Wireshark 2.2.5 and 2.0.11

Putty 0.68 (while released in February; it contains important security changes)

Apple Security Updates: updates are available for iTunes, iTunes for Windows, Pages, Numbers, Keynote (for macOS and iOS), Safari, macOS Sierra, El Capitan and Yosemite, iOS, watchOS, tvOS, macOS Server, iCloud for Windows.

Please see these links from Apple for advice on backing up your iPhone and iPad. Advice for updating tvOS is available here.

For advice on how to install updates for Apple devices, please see the steps detailed at the end of this Sophos blog post as well as this link (from my “Protecting Your PC” page). This link details how to update your Apple Watch.

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For the 17 Microsoft bulletins this month, I will prioritize the order of updates for you below:

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Critical severity:
Windows Graphics Component

Windows SMB Server

Microsoft Edge

Internet Explorer

Windows Hyper-V

Windows PDF

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Important Severity
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The update for Microsoft Office should be installed next due to it’s criticality. With the follow updates after it:

Microsoft Exchange

Microsoft IIS

Active Directory Federation Server

As always you can find detailed information on the contents of each security bulletin is published each month 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 is my standard practice, 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.