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Zscaler Security Advisories

Security Advisory - March 14, 2017

Zscaler protects against 48 new vulnerabilities for Internet Explorer, Microsoft Edge, Microsoft Uniscribe, Microsoft Windows, Microsoft Graphics Component, Microsoft Office, Internet Information Services, Windows Kernel, Windows Kernel-Mode Drivers, Dire

  1. Overview

Zscaler, working with Microsoft through their MAPP program, has proactively deployed protection for the following 48 vulnerabilities included in the March 2017 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the March release and deploy additional protections as necessary. 

MS17-006 – Cumulative Security Update for Internet Explorer

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. If the current user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Severity: Critical

Affected Software

  • Internet Explorer 9 - 11

CVE-2017-0008 – Internet Explorer Information Disclosure Vulnerability
CVE-2017-0009 – Microsoft Browser Memory Corruption Vulnerability
CVE-2017-0018 – Internet Explorer Memory Corruption Vulnerability
CVE-2017-0033 – Microsoft Browser Spoofing Vulnerability
CVE-2017-0037 – Microsoft Browser Memory Corruption Vulnerability
CVE-2017-0040 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0130 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0149 – Microsoft Internet Explorer Memory Corruption Vulnerability
CVE-2017-0154 – Internet Explorer Elevation of Privilege Vulnerability

MS17-007 – Cumulative Security Update for Microsoft Edge

This security update resolves vulnerabilities in Microsoft Edge. These 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 take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 

Severity: Critical

Affected Software

  • Microsoft Edge

CVE-2017-0009 – Microsoft Browser Memory Corruption Vulnerability
CVE-2017-0010 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0011 – Microsoft Edge Information Disclosure Vulnerability
CVE-2017-0015 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0017 – Microsoft Edge Information Disclosure Vulnerability
CVE-2017-0032 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0033 – Microsoft Browser Spoofing Vulnerability
CVE-2017-0035 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0037 – Microsoft Browser Memory Corruption Vulnerability
CVE-2017-0066 – Microsoft Edge Security Feature Bypass Vulnerability
CVE-2017-0067 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0070 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0071 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0094 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0131 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0133 – Scripting Engine Memory Corruption Vulnerability
CVE-2017-0140 – Microsoft Edge Security Feature Bypass
CVE-2017-0141 – Scripting Engine Memory Corruption Vulnerability

MS17-011 – Security Update for Microsoft Uniscribe

This security update resolves vulnerabilities in Windows Uniscribe. The most severe of these vulnerabilities could allow remote code execution if a user visits a specially crafted website or opens a specially crafted document. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Severity: Critical

Affected Software

  • Windows Vista SP2
  • Windows Server 2008 SP2
  • Windows 7 SP1
  • Windows Server 2008 R2 SP1
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0088 – Windows Uniscribe Remote Code Execution Vulnerability

MS17-012 – Security Update for Microsoft Windows

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker runs a specially crafted application that connects to an iSNS Server and then issues malicious requests to the server.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows Server 2008 SP2
  • Windows 7 SP1
  • Windows Server 2008 R2 SP1
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0039 – Windows DLL Loading Remote Code Execution Vulnerability
CVE-2017-0100 – Windows COM Elevation of Privilege Vulnerability

MS17-013 – Security Update for Microsoft Graphics Component

This security update resolves vulnerabilities in Microsoft Windows, Microsoft Office, Skype for Business, Microsoft Lync, and Microsoft Silverlight. The most severe of these vulnerabilities could allow remote code execution if a user either visits a specially crafted website or opens a specially crafted document. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows 7 SP1
  • Windows Server 2008 SP2
  • Windows Server 2008 R2 SP1
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0014 – Windows Graphics Component Remote Code Execution Vulnerability
CVE-2017-0025 – Windows GDI Elevation of Privilege Vulnerability
CVE-2017-0038 – Windows Graphics Component Information Disclosure Vulnerability

MS17-014 – Security Update for Microsoft Office

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.

Severity: Important

Affected Software

  • Microsoft Office 2007
  • Microsoft Office 2010
  • Microsoft Office 2013
  • Microsoft Office 2013 RT
  • Microsoft Office 2016
  • Microsoft Office 2011 for Mac
  • Microsoft Office 2016 for Mac

CVE-2017-0006 – Microsoft Office Memory Corruption Vulnerability
CVE-2017-0020 – Microsoft Office Memory Corruption Vulnerability
CVE-2017-0027 – Microsoft Office Information Disclosure Vulnerability
CVE-2017-0030 – Microsoft Office Memory Corruption Vulnerability
CVE-2017-0031 – Microsoft Office Memory Corruption Vulnerability
CVE-2017-0052 – Microsoft Office Memory Corruption Vulnerability

MS17-016 – Security Update for Internet Information Services

This security update resolves a vulnerability in Microsoft IIS Server. The vulnerability could allow elevation of privilege if a user clicks a specially crafted URL which is hosted by an affected Microsoft IIS Server. An attacker who successfully exploited this vulnerability could potentially execute scripts in the user’s browser to obtain information from web sessions.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows 7 SP1
  • Windows Server 2008 SP2
  • Windows Server 2008 R2 SP2
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0055 – Microsoft IIS Server XSS Elevation of Privilege Vulnerability

MS17-017 – Security Update for Windows Kernel

This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker runs a specially crafted application.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows 7 SP1
  • Windows Server 2008 SP2
  • Windows Server 2008 R2 SP1
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0050 – Windows Kernel Elevation of Privilege Vulnerability

MS17-018 – Security Update for Windows Kernel-Mode Drivers

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 that could exploit the vulnerabilities and take control of an affected system.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows Server 2008 SP2
  • Windows 7 SP1
  • Windows Server 2008 R2
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10

CVE-2017-0024 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0026 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0056 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0078 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0079 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0080 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0081 – Win32k Elevation of Privilege Vulnerability
CVE-2017-0082 – Win32k Elevation of Privilege Vulnerability

MS17-021 – Security Update for DirectShow

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow an information disclosure if Windows DirectShow opens specially crafted media content that is hosted on a malicious website. An attacker who successfully exploited the vulnerability could obtain information to further compromise a target system.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows Server 2008 SP2
  • Windows 7 SP1
  • Windows Server 2008 R2
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10

CVE-2017-0042 – Windows DirectShow Information Disclosure Vulnerabitliy

MS17-022 – Security Update for Microsoft XML Core Services

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if a user visits a malicious website. However, in all cases an attacker would have no way to force a user to click a specially crafted link. An attacker would have to convince a user to click the link, typically by way of an enticement in an email or Instant Messenger message.

Severity: Important

Affected Software

  • Windows Vista SP2
  • Windows Server 2008 SP2
  • Windows 7 SP1
  • Windows Server 2008 R2
  • Windows 8.1
  • Windows Server 2012 and Windows Server 2012 R2
  • Windows RT 8.1
  • Windows 10
  • Windows Server 2016

CVE-2017-0022 – Microsoft XML Core Services Information Disclosure Vulnerability