MS15-082: Vulnerabilities in RDP could allow remote code execution: August 11, 2015

Summary
This security update resolves vulnerabilities in Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker first places a specially crafted dynamic link library (DLL) file in the target user’s current working directory and then convinces the user to open an RDP file or to launch a program that is designed to load a trusted DLL file but instead loads the attacker’s specially crafted DLL file. An attacker who successfully exploited the vulnerabilities could take complete control of an affected system. An attacker could then install programs, could view, change, or delete data, or could create new accounts that have full user rights.

This security update addresses the vulnerability by correcting how the Remote Desktop Session Host (RDSH) validates certificates and how RDP loads certain binaries.

To learn more about the update, see Microsoft Knowledge Base article 3073094.

To learn more about the vulnerability, see Microsoft Security Bulletin MS15-082.
More information
Important
  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
Additional information about this security update
The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.
  • 3075226 MS15-082: Description of the security update for RDP in Windows: August 11, 2015
  • 3075222 MS15-082: Description of the security update for RDP in Windows: August 11, 2015

    Known issues in security update 3075222:
    • After you install or uninstall this security update, you may have to restart the computer two times.
  • 3075221 MS15-082: Description of the security update for RDP in Windows: August 11, 2015
  • 3075220 MS15-082: Description of the security update for RDP in Windows: August 11, 2015
How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, seeGet security updates automatically.

Note For Windows RT and Windows RT 8.1, this update is available only through Windows Update.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS15-082 that corresponds to the version of Windows that you are running.
More information

Security update deployment information

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file namesFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB3075220-x86.msu
Windows6.0-KB3075221-x86.msu

For all supported x64-based editions of Windows Vista:
Windows6.0-KB3075220-x64.msu
Windows6.0-KB3075221-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationWUSA.exe does not support the removal of updates. To uninstall an update that was installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file namesFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB3075220-x86.msu

For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB3075220-x64.msu

For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB3075220-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationWUSA.exe does not support the removal of updates. To uninstall an update that was installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported 32-bit editions of Windows 7:
Windows6.1-KB3075220-x86.msu
Windows6.1-KB3075222-x86.msu
Windows6.1-KB3075226-x86.msu

For all supported x64-based editions of Windows 7:
Windows6.1-KB3075220-x64.msu
Windows6.1-KB3075222-x64.msu
Windows6.1-KB3075226-x86.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationTo uninstall an update that was installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB3075220-x64.msu
Windows6.1-KB3075222-x64.msu
Windows6.1-KB3075226-x86.msu

For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB3075220-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationTo uninstall an update that was installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 8 and Windows 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported 32-bit editions of Windows 8:
Windows8-RT-KB3075220-x86.msu

For all supported x64-based editions of Windows 8:
Windows8-RT-KB3075220-x64.msu

For all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3075220-x86.msu

For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3075220-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationTo uninstall an update that was installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2012 and Windows Server 2012 R2 (all editions)

Reference Table

The following table contains the security update information for this software.
Security update file nameFor all supported editions of Windows Server 2012:
Windows8-RT-KB3075220-x64.msu

For all supported editions of Windows Server 2012 R2:
Windows8.1-KB3075220-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYou must restart your system after you apply this security update.
Removal informationTo uninstall an update that was installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 3045171
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows RT and Windows RT 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.
DeploymentThese updates are available through Windows Update only.
Restart RequirementYou must restart your system after you apply this security update.
Removal InformationClick Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 3045171

File hash information

File nameSHA1 hashSHA256 hash
Windows6.0-KB3075220-ia64.msu42DE6591E1F11B7880D592DE99822D9209DA62E19BE293A14D44D1DF73AE91FDFEE439B4797899B4B1DA12E7737484647E1F62C6
Windows6.0-KB3075220-x64.msuCDB63E470C817A445929AED7521C7103CC8E801EBE962EFB24BB4853B603EDE6AF0AE94926758BFBA54FDE7F22FEFF3C1429FF7F
Windows6.0-KB3075220-x86.msu76552E0D4166711A4AC5BEC17CD1AA0789A7FD7200465D9266E23EA91D5F20556F4C39F69BF221FB41805E53E3004AB967B1D927
Windows6.0-KB3075221-x64.msu5E96E9CCAD8B302BCC38A1A69C7B7D7C6941D7EAF29664D5C30DBF769F57E26AB3257974792758F460D7C1F5B23C224CBF5B5F81
Windows6.0-KB3075221-x86.msu970FF92B910A98E851C24A618D152853B21CABCC30E217FE4FC6907C00CCA928BF4271B15AF3A1A24F65037E0D7ED35666B6D91E
Windows6.1-KB3075220-ia64.msu1A84542FEAA7C7D7E5F2A3618EC1A5F43F43EC44F479E3B6826CCAF58F20DA7BFA9160304C65C675FB06AF1993E8136CEDC76664
Windows6.1-KB3075220-x64.msuAA1F21337A50E431E65B348C4799B5CA2E9E636FC8D77DE57760D69BACBB5E1FD0D9422D7FF9BFD0178F310160F3A3370F95180D
Windows6.1-KB3075220-x86.msu1E46613AED15B1BBA9FB37F2FDDD391D41FF3E49E118CD6720416C74F72E5EA1BED299FD4EB404FF291743DAD0A03AED599B22D5
Windows6.1-KB3075222-x64.msuA4FBEFE464E6C9D4C3924516379A570F7884E28958FA1785C20463A226C00AFD65EA1B73369E4220EC02A0AA43ABA815D6459EFC
Windows6.1-KB3075222-x86.msuF1EE54E30726E374D6A6673EA197FED8D39C8EF8F03E8E1EF46DD1DF23325EF2D9869F020BD4B4FFAAC41FB066005C9769788D4A
Windows6.1-KB3075226-x64.msuEDCAA1B72946B2894F0A3DEBF08ADB059D5A254BF75AB96003F255EF38DFB40941A9C0751EA9BBADCB0FCF22592E3A4C438E6C9D
Windows6.1-KB3075226-x86.msu4AC94A6FD2B0038520D9BDAB3D98D3779F557F7F1FCDE5BC4864D14A893D6863E9934A583841C48E353DB62928C88F2C2EE80BE6
Windows8.1-KB3075220-arm.msu80C2CE5711A98451BFBA7DD1D83CF7DF207AD737AC38DC63EE7B16D615002934F810438AC8A456B42AE69F4B80B3B604D05E1CAE
Windows8.1-KB3075220-x64.msu634EC20FBF0CDAF870D77136EB6E2F3AF0D768090EE6806DED0DFE9A040FB9499F1E915F42480A87ACFC0E85071BDA23FBD29507
Windows8.1-KB3075220-x86.msuDE71F161F9CFC74CE8E2D2104E23528691F7326437BD5D87BEBD08BD6A98DFF997D80C736C0E529A5F1A44A2F58F67BF96275E3B
Windows8-RT-KB3075220-arm.msu9362755EB2067A66FDB9694491328D206D41786CADC2A8781593BBB266D1D24CA1357E6D0388592C9F9740F187EC12F56B97C625
Windows8-RT-KB3075220-x64.msu2BF751DB2BD4D2A35D2571771C0DB39FB79BD409B7A108ED9156EC99D7436A6FCA10DE84FC0B0168E602E2D5F09E93AF6DBC9F01
Windows8-RT-KB3075220-x86.msu233D6FC97D673F8F14A22BA26B5DFC7A0778875EAC954F83B47DA00DA7C2558A07F4B64BCC3FE94C2921F3E27C3FB667D609C3AB

How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

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

Local support according to your country: International Support
malicious attacker exploit
Properties

Article ID: 3080348 - Last Review: 08/11/2015 17:44:00 - Revision: 1.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1, Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows 8 Enterprise, Windows 8 Pro, Windows 8, Windows RT, Windows Server 2008 R2 Service Pack 1, Windows 7 Service Pack 1, Windows Server 2008 Service Pack 2, Windows Vista Service Pack 2

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