Vulnerabilities

A remote code execution vulnerability exists in Microsoft SharePoint Server when it fails to properly identify and filter unsafe ASP.Net web controls. An authenticated attacker who successfully exploited the vulnerability could use a specially crafted page to perform actions in the security context of the SharePoint application pool process.<br /> To exploit the vulnerability, an authenticated user must create and invoke a specially crafted page on an affected version of Microsoft SharePoint Server.<br /> The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles processing of created content.

An elevation of privilege vulnerability exists when Microsoft Windows CloudExperienceHost fails to check COM objects. An attacker who successfully exploited the vulnerability could gain elevated privileges on a targeted system.<br /> To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application.<br /> The security update addresses the vulnerability by checking COM objects.

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server.<br /> The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. The attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim&amp;#39;s identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user.<br /> The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.

An elevation of privilege vulnerability exists when the Diagnostics Hub Standard Collector improperly handles data operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context.<br /> An attacker could exploit this vulnerability by running a specially crafted application on the victim system.<br /> The update addresses the vulnerability by correcting the way the Diagnostics Hub Standard Collector handles data operations.

An elevation of privilege vulnerability exists when the Diagnostics Hub Standard Collector improperly handles file operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context.<br /> An attacker could exploit this vulnerability by running a specially crafted application on the victim system.<br /> The update addresses the vulnerability by correcting the way the Diagnostics Hub Standard Collector handles file operations.

An elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.<br /> To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.<br /> The security update addresses the vulnerability by correcting how the Microsoft Store Runtime handles memory.

An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited the vulnerability could gain elevated privileges on a targeted system.<br /> To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application.<br /> The update addresses the vulnerability by correcting how Windows handles calls to Win32k.

An elevation of privilege vulnerability exists in the way that the StartTileData.dll handles file creation in protected locations. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.<br /> To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application.<br /> The security update addresses the vulnerability by ensuring the StartTileData.dll properly handles this type of function.

An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in an elevated context.<br /> An attacker could exploit this vulnerability by running a specially crafted application on the victim system.<br /> The update addresses the vulnerability by correcting the way the Windows Runtime handles objects in memory.

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.<br /> 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.<br /> The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.

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.<br /> 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.<br /> The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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.<br /> Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Excel. 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) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.<br /> The security update addresses the vulnerability by correcting how Microsoft Excel handles objects in memory.