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Security Advisory - December 13, 2017

Zscaler protects against 17 new vulnerabilities for Microsoft Edge, Internet Explorer, ChakraCore & Microsoft Office.

 

 

Zscaler, working with Microsoft through their MAPP program, has proactively deployed protection for the following 17 vulnerabilities included in the December 2017 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the December release and deploy additional protections as necessary. 

CVE-2017-11886 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11889 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. 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 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. 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-2017-11890 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11893 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge. 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 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. 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-2017-11894 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 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 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • 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-2017-11895 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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
  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • 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-2017-11901 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11903 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11907 – 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11909 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

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-2017-11911 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

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-2017-11913 – Scripting Engine Memory Corruption 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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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 10 on Windows Server 2012

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, 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 designed to exploit the vulnerability through Internet Explorer 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. 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, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

CVE-2017-11914 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

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-2017-11916 – Scripting Engine Memory Corruption Vulnerability

Severity: Important
Affected Software

  • ChakraCore

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. 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. The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.

CVE-2017-11918 – Scripting Engine Memory Corruption Vulnerability

Severity: Critical
Affected Software

  • Microsoft Edge on Windows 10 for 32-bit Systems
  • Microsoft Edge on Windows 10 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for x64-based Systems
  • Microsoft Edge on Windows 10 Version 1511 for 32-bit 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
  • ChakraCore

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-2017-11930 – Scripting Engine Memory Corruption Vulnerability

Severity: Important
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 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 10 Version 1511 for x64-based Systems
  • Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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
  • 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-2017-11935 – Microsoft Excel Remote Code Execution Vulnerability

Severity: Important
Affected Software

  • Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions
  • Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions

A remote code execution vulnerability exists in Microsoft Office software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user. To exploit the vulnerability, a user must open a specially crafted file with an affected version of Microsoft Office software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Office handles files in memory.