MS13-039: Vulnerability in HTTP.sys could allow denial of service: May 14, 2013

Microsoft has released security bulletin MS13-039. To view the complete security bulletin, go to one of the following Microsoft websites:

• Home users:
  http://www.microsoft.com/security/pc-security/bulletins/201305.aspx
  Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
  http://update.microsoft.com/microsoftupdate/
• IT professionals:
  http://technet.microsoft.com/security/bulletin/MS13-039

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help protect your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

Known issues with this security update

• Windows Update will not offer this security update to Windows RT-based computers until update 2808380 has been installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
  2808380 Windows RT-based device cannot download software updates or Windows Store apps

File hash information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

• The files that apply to a specific product, milestone (RTM,SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

  Version	Product	Milestone	Service branch
  6.2.920 0.16 xxx	Windows 8 and Windows Server 2012	RTM	GDR
  6.2.920 0.20 xxx	Windows 8 and Windows Server 2012	RTM	LDR

• GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x86-based versions of Windows 8

For all supported x64-based versions of Windows 8 and Windows Server 2012