Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008 SP2 (KB4570503)

Applies to: .NET Framework

Summary


An elevation of privilege vulnerability exists when ASP.NET or .NET Framework web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET Framework handle requests.

To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).

A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.

For more information go to: https://go.microsoft.com/fwlink/?linkid=2138023

To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).

For a list of improvements that were released with this update, please see the article links in the Additional Information section of this article.

Additional information about this update


The following articles contain additional information about this update as it relates to individual product versions.
  • 4569735 Description of the Security Only Update for .NET Framework 2.0, 3.0 for Windows Server 2008 SP2 (KB4569735)
  • 4569743 Description of the Security Only Update for .NET Framework 4.5.2 for Windows 7 SP1 and Windows Server 2008 R2 SP1 and Windows Server 2008 SP2 (KB4569743)
  • 4569740 Description of the Security Only Update for .NET Framework 4.6 for Windows 7 SP1 and Windows Server 2008 R2 SP1 and Windows Server 2008 SP2 (KB4569740)

Information about protection and security