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Windows 10 Groundhog Day: August Patch Tuesday

By August 13, 2015June 22nd, 2022No Comments

Could it be groundhog day for Windows 10 users? Reports are surfacing of a rouge update causing Windows 10 devices to get stuck in a continual reboot, rebooting over & over again. Although Windows 10 was not expected to be a candidate for this month’s patch Tuesday, there are some reported issues already in the field. Any update you apply to this new Operating System should still pass through your structured test plan before installing on live systems. Issues like stuck reboots should never happen even in a basic test cycle. With Windows 10 being so new, it is highly likely many IT departments are not yet ready to begin troubleshooting issues and many may simply revert to rebuilding broken systems from scratch.

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This release of updates consists of 14 patch bulletins (4 critical and 10 important) which resolve close to 60 separate vulnerabilities, impacting a lot of the Microsoft real estate including a rare appearance of System Centre Operations Manager. The usual suspects of Windows, Internet Explorer, Office, RDP and .NET Framework make up the bulk of the rest. We also see for the first time Microsoft replacement for Internet Explorer – Edge.

Overall, this patch Tuesday is a fairly light release. If you have not yet designed your release strategy, you may want to take this time to refine your processes in the hope that next month’s patch Tuesday is as light as last years which contained only 4 patch bulletins.

All content from the following table will be added into the Syxsense subscription shortly. We will be recommending our patch management as a service (PMAAS) clients consider the following updates for their remediation cycle this month as a priority; MS15-079, MS15-080, MS15-081 and MS15-091 by combining the vendor severity, the independent CVSS score and their current exposure. The most important update in this release in our opinion is MS15-081 due to the CVSS score of 9.3 and with active exploits already being reported will likely impact our customers the most.

The independent CVSS scores range from 0 to 10. Vulnerabilities with a base score in the range 7.0-10.0 are High, those in the range 4.0-6.9 as Medium, and 0-3.9 as Low.

Patch Number Executive Summary Vulnerability Type Vendor Severity CVSS Score
MS15-079 Cumulative Security Update for Internet Explorer (3082442)
This security update resolves vulnerabilities in Internet Explorer. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Remote Code Execution Critical 9.3
MS15-080 Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3078662)
This security update resolves vulnerabilities in Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits an untrusted webpage that contains embedded TrueType or OpenType fonts.
Remote Code Execution Critical 9.3
MS15-081 Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3080790)
This security update resolves vulnerabilities in Microsoft Office. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Remote Code Execution Critical 9.3
MS15-082 Vulnerabilities in RDP Could Allow Remote Code Execution (3080348)
This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker first places a specially crafted dynamic link library (DLL) file in the target user’s current working directory and then convinces the user to open a Remote Desktop Protocol (RDP) file or to launch a program that is designed to load a trusted DLL file but instead loads the attacker’s specially crafted DLL file. An attacker who successfully exploited the vulnerabilities could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
Remote Code Execution Important 9.3
MS15-083 Vulnerability in Server Message Block Could Allow Remote Code Execution (3073921)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends a specially crafted string to SMB server error logging.
Remote Code Execution Important 8.5
MS15-084 Vulnerabilities in XML Core Services Could Allow Information Disclosure (3080129)
This security update resolves vulnerabilities in Microsoft Windows and Microsoft Office. The vulnerabilities could allow information disclosure by either exposing memory addresses if a user clicks a specially crafted link or by explicitly allowing the use of Secure Sockets Layer (SSL) 2.0. However, in all cases an attacker would have no way to force users to click a specially crafted link. An attacker would have to convince users to click the link, typically by way of an enticement in an email or Instant Messenger message.
Information Disclosure Important 4.3
MS15-085 Vulnerability in Mount Manager Could Allow Elevation of Privilege (3082487)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker inserts a malicious USB device into a target system. An attacker could then write a malicious binary to disk and execute it.
Elevation of Privilege Important 7.2
MS15-086 Vulnerability in System Center Operations Manager Could Allow Elevation of Privilege (3075158)
This security update resolves a vulnerability in Microsoft System Center Operations Manager. The vulnerability could allow elevation of privilege if a user visits an affected website by way of a specially crafted URL. An attacker would have no way to force users to visit such a website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the affected website.
Elevation of Privilege Important 4.3
MS15-087 Vulnerability in UDDI Services Could Allow Elevation of Privilege (3082459)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker engineered a cross-site scripting (XSS) scenario by inserting a malicious script into a webpage search parameter. A user would have to visit a specially crafted webpage where the malicious script would then be executed.
Elevation of Privilege Important 4.3
MS15-088 Unsafe Command Line Parameter Passing Could Allow Information Disclosure (3082458)
This security update helps to resolve an information disclosure vulnerability in Microsoft Windows, Internet Explorer, and Microsoft Office. To exploit the vulnerability an attacker would first have to use another vulnerability in Internet Explorer to execute code in the sandboxed process. The attacker could then execute Notepad, Visio, PowerPoint, Excel, or Word with an unsafe command line parameter to effect information disclosure. To be protected from the vulnerability, customers must apply the updates provided in this bulletin, as well as the update for Internet Explorer provided in MS15-079. Likewise, customers running an affected Microsoft Office product must also install the applicable updates provided in MS15-081.
Information Disclosure Important 1.2
MS15-089 Vulnerability in WebDAV Could Allow Information Disclosure (3076949)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if an attacker forces an encrypted Secure Socket Layer (SSL) 2.0 session with a WebDAV server that has SSL 2.0 enabled and uses a man-in-the-middle (MiTM) attack to decrypt portions of the encrypted traffic.
Information Disclosure Important 4.3
MS15-090 Vulnerabilities in Microsoft Windows Could Allow Elevation of Privilege (3060716)
This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application or convinces a user to open a specially crafted file that invokes a vulnerable sandboxed application, allowing an attacker to escape the sandbox.
Elevation of Privilege Important 9.3
MS15-091 Cumulative Security Update for Microsoft Edge (3084525)
This security update resolves vulnerabilities in Microsoft Edge. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Microsoft Edge. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Remote Code Execution Critical 9.3
MS15-092 Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3086251)
This security update resolves vulnerabilities in Microsoft .NET Framework. The vulnerabilities could allow elevation of privilege if a user runs a specially crafted .NET application. However, in all cases, an attacker would have no way to force users to run the application; an attacker would have to convince users to do so.
Elevation of Privilege Important 9.3

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