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Security Advisory - May 14, 2019

Zscaler protects against 10 new vulnerabilities for Microsoft Windows, Internet Explorer, Microsoft Edge and ChakraCore.

 

 

Zscaler, working with Microsoft through their MAPP program, has proactively deployed protection for the following 10 vulnerabilities included in the May 2019 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the May release and deploy additional protections as necessary. 

CVE-2019-0930 – Internet Explorer Information Disclosure vulnerability.

Severity: Important

Affected Software

  • Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2012
  • Internet Explorer 11 on Windows 8.1 for 32-bit systems
  • Internet Explorer 11 on Windows 8.1 for x64-based systems
  • Internet Explorer 11 on Windows Server 2012 R2
  • Internet Explorer 11 on Windows RT 8.1
  • Internet Explorer 11 on Windows 10 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 for x64-based Systems
  • Internet Explorer 11 on Windows Server 2016
  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
  • Internet Explorer 11 on Windows Server 2019
  • Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • Internet Explorer 10 on Windows Server 2012

An information disclosure vulnerability exists when Internet Explorer improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. To exploit the vulnerability, in a web-based attack scenario, an attacker could host a website to exploit the vulnerability. In addition, compromised websites and websites that accept, or host user-provided content could contain specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker's site. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2019-0918 – Scripting Engine Memory Corruption Vulnerability.

Severity: Critical

Affected Software

  • Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2012
  • Internet Explorer 11 on Windows 8.1 for 32-bit systems
  • Internet Explorer 11 on Windows 8.1 for x64-based systems
  • Internet Explorer 11 on Windows Server 2012 R2
  • Internet Explorer 11 on Windows RT 8.1
  • Internet Explorer 11 on Windows 10 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 for x64-based Systems
  • Internet Explorer 11 on Windows Server 2016
  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
  • Internet Explorer 11 on Windows Server 2019
  • Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • Internet Explorer 10 on Windows Server 2012

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability 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 the 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. In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability through a Microsoft browser and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the browser rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability. The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.

CVE-2019-0885 – Windows OLE Remote Code Execution Vulnerability.

Severity: Important

Affected Software

  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1703 for 32-bit Systems
  • Windows 10 Version 1703 for x64-based Systems
  • Windows 10 Version 1709 for 32-bit Systems
  • Windows 10 Version 1709 for 64-based Systems
  • Windows 10 Version 1709 for ARM64-based Systems
  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1803 for ARM64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1903 for 32-bit Systems
  • Windows 10 Version 1903 for ARM64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server, version 1803 (Server Core Installation)
  • Windows Server, version 1903 (Server Core installation)

A remote code execution vulnerability exists when Microsoft Windows OLE fails to properly validate user input. An attacker could exploit the vulnerability to execute malicious code. To exploit the vulnerability, an attacker would have to convince a user to open a specially crafted file or a program, causing Windows to execute arbitrary code. The update addresses the vulnerability by correcting how Windows OLE validates user input.

CVE-2019-0940 – Microsoft Browser Memory Corruption Vulnerability

Severity: Critical

Affected Software

  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2012
  • Internet Explorer 11 on Windows 8.1 for 32-bit systems
  • Internet Explorer 11 on Windows 8.1 for x64-based systems
  • Internet Explorer 11 on Windows Server 2012 R2
  • Internet Explorer 11 on Windows RT 8.1
  • Internet Explorer 11 on Windows 10 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 for x64-based Systems
  • Internet Explorer 11 on Windows Server 2016
  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
  • Internet Explorer 11 on Windows Server 2019
  • Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • Internet Explorer 10 on Windows Server 2012
  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows Server 2016
  • Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1607 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1703 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1709 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1803 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Edge on Windows Server 2019
  • Microsoft Edge on Windows 10 Version 1709 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for ARM64-based Systems

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker 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. An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment. The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.

CVE-2019-0938 – Microsoft Edge Elevation of Privilege vulnerability.

Severity: Important

Affected Software

  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows Server 2016
  • Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1607 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1703 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1709 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1803 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Edge on Windows Server 2019
  • Microsoft Edge on Windows 10 Version 1709 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for ARM64-based Systems

An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser. An attacker who successfully exploited this vulnerability could gain elevated privileges and break out of the Edge AppContainer sandbox. The vulnerability by itself does not allow arbitrary code to run. However, this vulnerability could be used in conjunction with one or more vulnerabilities (for example a remote code execution vulnerability and another elevation of privilege vulnerability) to take advantage of the elevated privileges when running. The security update addresses the vulnerability by modifying how Microsoft Edge handles sandboxing.

CVE-2019-0926 – Microsoft Edge Memory Corruption Vulnerability.

Severity: Critical

Affected Software

  • Microsoft Edge on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Edge on Windows Server 2019
  • Microsoft Edge on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for ARM64-based Systems

A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker 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. An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge, and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by way of enticement in an email or Instant Messenger message, or by getting them to open an attachment sent through email. The security update addresses the vulnerability by modifying how Microsoft Edge handles objects in memory.

CVE-2019-0882 – Windows GDI Information Disclosure Vulnerability.

Severity: Important

Affected Software

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1703 for 32-bit Systems
  • Windows 10 Version 1703 for 32-bit Systems
  • Windows 10 Version 1703 for x64-based Systems
  • Windows 10 Version 1709 for 32-bit Systems
  • Windows 10 Version 1709 for 64-based Systems
  • Windows 10 Version 1709 for ARM64-based Systems
  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1803 for ARM64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1903 for 32-bit Systems
  • Windows 10 Version 1903 for ARM64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server, version 1803 (Server Core Installation)
  • Windows Server, version 1903 (Server Core installation)

An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.

CVE-2019-0911 – Scripting Engine Memory Corruption Vulnerability.

Severity: Critical

Affected Software

  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Internet Explorer 11 on Windows Server 2012
  • Internet Explorer 11 on Windows 8.1 for 32-bit systems
  • Internet Explorer 11 on Windows 8.1 for x64-based systems
  • Internet Explorer 11 on Windows Server 2012 R2
  • Internet Explorer 11 on Windows RT 8.1
  • Internet Explorer 11 on Windows 10 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 for x64-based Systems
  • Internet Explorer 11 on Windows Server 2016
  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
  • Internet Explorer 11 on Windows Server 2019
  • Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • Internet Explorer 10 on Windows Server 2012
  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows Server 2016
  • Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1607 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1703 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1709 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1803 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Edge on Windows Server 2019
  • Microsoft Edge on Windows 10 Version 1709 for ARM64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Edge on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1903 for ARM64-based Systems
  • ChakraCore

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability 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 the 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. In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability through a Microsoft browser and then convince a user to view the website. An attacker could also embed an ActiveX control marked safe for initialization in an application or Microsoft Office document that hosts the browser rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability. The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.

CVE-2019-0758 – Windows GDI Information Disclosure Vulnerability.

Severity: Important

Affected Software

  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1703 for 32-bit Systems
  • Windows 10 Version 1703 for x64-based Systems
  • Windows 10 Version 1709 for 32-bit Systems
  • Windows 10 Version 1709 for 64-based Systems
  • Windows 10 Version 1709 for ARM64-based Systems
  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1803 for ARM64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1903 for 32-bit Systems
  • Windows 10 Version 1903 for ARM64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server, version 1803 (Server Core Installation)
  • Windows Server, version 1903 (Server Core installation)

An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.

CVE-2019-0708 – Remote Desktop Services Remote Code Execution Vulnerability.

Severity: Critical

Affected Software

  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

A remote code execution vulnerability exists in Remote Desktop Services – formerly known as Terminal Services – when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests. This vulnerability is pre-authentication and requires no user interaction. An attacker who successfully exploited this vulnerability could execute arbitrary code on the target system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would need to send a specially crafted request to the target systems Remote Desktop Service via RDP. The update addresses the vulnerability by correcting how Remote Desktop Services handles connection requests.

No in-the-wild exploits have been observed for this vulnerability.