Windir System32 Mstsc Executive Branch
Windows XP Professional and Windows XP Media Center Edition (MCE) has Remote Desktop (RDP) service that allows the computer to be remotely connected, accessed and controlled from another computer or host. However, Windows XP machine only allows one concurrent remote desktop connection from a single user been connected to it with no multiple remote desktop sessions or connections support.
If your redistributed Microsoft Remote Desktop Web Connection binaries are in a custom location, you will have to update the custom location with the updated Microsoft Remote Desktop Web Connection binaries.
Something the CIO of an insurance company executive said to Rob recently: 'Chunk it, routinize it, digitize it, automate it and send it offsore.' IT needs a new trick. Are the common principals, processes, and practices in use by acclaimed innovators across a range of fields? Missing net.hlp and net1.exe in WINNT system32 folder. We copy them back. Use “mstsc /admin” to connect in console mode, until then, we can see the notification. 954716 The SMS_EXECUTIVE service of System Center Configuration Manager 2007. Books by Language Minnesota Prevention Resource Center - Open Libraries St. Mary's County Library (MD) - Open Libraries Georgetown University Law Library - Open Libraries SALIS Collection: Alcohol, Tobacco, and Other Drugs - Open Libraries Little Bird Books - Open Libraries Mechanics' Institute, San Francisco, CA - Open Libraries.
Whenever there is a remote user who user Remote Desktop Connection (RDC) client to connect to a Windows XP host, the local user is disconnected with the local console screen locked, with or without his or her permission. Remote Desktop, unlike Terminal Server Services in Windows 2000, Windows Server 2003, Windows Server 2008 (R2), Windows Server 2012 (R2), Windows Server 2016 or later, is designed for single user use only, no matter it’s local or remote user.
Here’s a hack to unlock the single user limitation and enable multiple concurrent remote desktop connection sessions support in Windows XP Professional and Media Center Edition, using a either a patched termserv.dll or old patched cracked termserv.dll build version version 5.1.2600.2055, so that unlimited users can simultaneously connect to a computer via Remote Desktop.
- Download a copy of patched termsrv.dll (in ZIP file) which has the Remote Desktop connection limitation deactivated for your version of Windows XP:
Windows XP RTM, SP1 and SP2:
termsrv.dll (version 5.1.2600.2055)
Windows XP SP2:termsrv.dll (version 5.1.2600.2180)
Windows XP SP3:termsrv.dll (version 5.1.2600.5512)For information, the termsrv.dll patch normally has the following HEX code bits overwritten with following value:
00022A17: 74 75
00022A69: 7F 90
00022A6A: 16 90 - Restart the computer and boot info Safe Mode by pressing F8 during initial boot up and select Safe Mode. This step is only required if you’re currently running Windows Terminal Services or Remote Desktop service, and System File Protection has to be skipped and bypassed, else it will prompt the following error message to restore the original termsrv.dll.
- Go to %windir%System32 and make a backup copy (or rename) the termsrv.dll.
- Rename or delete the termserv.dll in the %windir%System32dllcache folder.
- Copy the downloaded termsrv.dll into %windir%System32, %windir%ServicePackFilesi386 (if exist) and %windir%System32dllcache.
- Then download and run the ts_concurrent_session_patch.bat (in ZIP file) to merge the registry value into registery, or you can run Registry Editor to manually add the following registry value:
- Click on Start Menu ->Run command and type gpedit.msc, follow by Enter to open up the Group Policy Editor.
- Navigate to Computer Configuration ->Administrative Templates ->Windows Components ->Terminal Services.
- Enable Limit Number of Connections and set the number of connections to 3 (or more). The setting allows more than one users to use the computer and logged on at the same time.
- Ensure the Remote Desktop is enabled in System Properties’ Remote tab by selecting the radio button for Allow users to connect remotely to this computer.
- Enable and turn on Fast User Switching in Control Panel ->User Accounts ->Change the way users log on or off.
- Restart the computer normally.
To uninstall and revert back to original termsrv.dll, simply delete the patched version, and rename the backup copy back to “termsrv.dll”. You probably have to do it in Safe Mode if the Terminal Services is enabled and running.
If the Windows XP computer is connected to a domain on local networks, Windows will set the value of the regkey “AllowMultipleTSSessions” to “0” every time the computer is restarted. To ensure that multiple or unlimited Remote Desktop connection sessions is allowed in AD domain environment, the value data for “AllowMultipleTSSessions” has to be set to “1” on each system startup. To change the value, simply rerun the ts_multiple_sessions.bat every time the computer is started. Alternatively, put the ts_multiple_sessions.bat at C:Documents and SettingsAll UsersStart MenuProgramsStartup folder so that it will be automatically run on first user with administrative privileges that logs on to the desktop. Another workaround is to install additional service or define a sub-key in HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun registry branch that run the registry batch file automatically on boot up, and this is useful if the computer won’t be logged on by anybody, but still requires the hack to allow unlimited Remote Desktop users to work.
Another issue is that if user closes the remote connection instead of logging off, when he or she tries to log back in, an error message related to TCP/IP event ID 4226 may occur. To resolve the issue, download and apply the Windows XP TCP/IP connection limit and Event ID 4226 patch, and set the connections to at least 50.
-->Cumulative Security Update for Internet Explorer (3096441)
Published: October 13, 2015 | Updated: January 27, 2016
Version: 2.1
Executive Summary
This security update resolves vulnerabilities in Internet Explorer. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
This security update is rated Critical for Internet Explorer 7 (IE 7), Internet Explorer 8 (IE 8), Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10), and Internet Explorer 11 (IE 11) on affected Windows clients, and Moderate for Internet Explorer 7 (IE 7), Internet Explorer 8 (IE 8), Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10), and Internet Explorer 11 (IE 11) on affected Windows servers. For more information, see the Affected Software section.
The security update addresses the vulnerabilities by:
- Modifying how Internet Explorer, JScript, VBScript and certain functions handle objects in memory
- Adding additional permission validations to Internet Explorer
For more information about the vulnerabilities, see the Vulnerability Information section.
For more information about this update, see Microsoft Knowledge Base Article 3096441.
Affected Software
The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.
Affected Software
| **Operating System** | **Component** | **Maximum Security Impact** | **Aggregate Severity Rating** | **Updates Replaced*** |
| **Internet Explorer 7** | ||||
| Windows Vista Service Pack 2 | [Internet Explorer 7](http://www.microsoft.com/downloads/details.aspx?familyid=c33114e6-a0fa-4eba-ab32-053cacefb0ca) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Vista x64 Edition Service Pack 2 | [Internet Explorer 7](http://www.microsoft.com/downloads/details.aspx?familyid=b4b01aec-c8ea-4721-8d68-3cec1c52340e) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | [Internet Explorer 7](http://www.microsoft.com/downloads/details.aspx?familyid=276005d9-e7c4-4c08-8a1d-6e9e363b2420) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for x64-based Systems Service Pack 2 | [Internet Explorer 7](http://www.microsoft.com/downloads/details.aspx?familyid=0eb77efd-2f91-42a7-8cb3-62d4a69720d5) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for Itanium-based Systems Service Pack 2 | [Internet Explorer 7](http://www.microsoft.com/downloads/details.aspx?familyid=81f2f143-bf2c-4aae-af92-380fc48eacd9) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| **Internet Explorer 8** | ||||
| Windows Vista Service Pack 2 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=91bc58b3-d155-4cb8-8749-843e95daae10) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Vista x64 Edition Service Pack 2 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=02c67ea0-b772-4a1f-8bb7-ba2f447214bf) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=73e22b74-db8e-409e-a0cc-119d58fdb260) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for x64-based Systems Service Pack 2 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=79e74024-4f2b-4993-9acc-3a66ce8841db) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for 32-bit Systems Service Pack 1 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=771a52a0-5f71-4711-8b3f-6f85ac2a012c) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for x64-based Systems Service Pack 1 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=d613eb07-288c-4e00-a5db-29845b712782) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=e255f3e9-52aa-4f6f-8c94-0c8270eef963) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 | [Internet Explorer 8](http://www.microsoft.com/downloads/details.aspx?familyid=2f59529b-945b-4631-aebe-56a90381ae4f) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| **Internet Explorer 9** | ||||
| Windows Vista Service Pack 2 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=1b244f1f-3953-4e14-a3cf-48f1476d1c8b) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Vista x64 Edition Service Pack 2 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=9bbd2ef7-9dac-4072-9855-ca2868a2a678) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=497fd2b1-f3ef-488d-ab21-d42ddec7e668) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 for x64-based Systems Service Pack 2 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=79a5e4c3-8074-4f7f-a267-5eba2d8777c1) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for 32-bit Systems Service Pack 1 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=28f1551b-edb7-45f2-ac55-5413e3c3a4f8) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for x64-based Systems Service Pack 1 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=05388387-dda5-4193-a581-7f54c28d2aac) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | [Internet Explorer 9](http://www.microsoft.com/downloads/details.aspx?familyid=03a3413e-5935-4a92-a2f4-58af06822148) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| **Internet Explorer 10** | ||||
| Windows 7 for 32-bit Systems Service Pack 1 | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=47024159-63a1-4261-89c0-9a8912d5c4fb) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for x64-based Systems Service Pack 1 | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=df6dbb57-eb8f-4ad1-9465-53f04d0e6e8b) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=311dee52-c560-4683-ba85-3ee9a38354e3) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 8 for 32-bit Systems | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=f3a6ce8b-12b4-4b8c-877b-77df5a199801) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 8 for x64-based Systems | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=42f891dd-d57d-4c71-9944-d98e87f9d772) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2012 | [Internet Explorer 10](http://www.microsoft.com/downloads/details.aspx?familyid=741c1c3f-270b-4ddb-a5e4-cefa3e262be9) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows RT | Internet Explorer 10[1](3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| **Internet Explorer 11** | ||||
| Windows 7 for 32-bit Systems Service Pack 1 | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=755a2e7d-8000-43cd-bd9a-097958d84382) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 7 for x64-based Systems Service Pack 1 | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=d6d8f2a6-4c7b-4e71-8b94-ef4339c6726a) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=a2428a05-bea8-41a3-a94e-905801ebd136) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 8.1 for 32-bit Systems | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=3d5274c5-8d76-4bf0-b7ca-8532e77d3891) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows 8.1 for x64-based Systems | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=94ccf6cc-3aba-4fb3-b0fb-07dd93a33c2c) (3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows Server 2012 R2 | [Internet Explorer 11](http://www.microsoft.com/downloads/details.aspx?familyid=44ca57c0-5c82-4728-ae41-cb8fbfef090e) (3093983) | Remote Code Execution | Moderate | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| Windows RT 8.1 | Internet Explorer 11[1](3093983) | Remote Code Execution | Critical | 3087038 in [MS15-094](http://go.microsoft.com/fwlink/?linkid=623623) |
| [Windows 10 for 32-bit Systems](https://support.microsoft.com/kb/3105210)[2](3105210) | Internet Explorer 11 | Remote Code Execution | Critical | [3097617](https://support.microsoft.com/kb/3097617) in MS15-106 |
| [Windows 10 for x64-based Systems](https://support.microsoft.com/kb/3105210)[2](3105210) | Internet Explorer 11 | Remote Code Execution | Critical | [3097617](https://support.microsoft.com/kb/3097617) in MS15-106 |
[2]The Windows 10 update is cumulative. In addition to containing non-security updates, it also contains all of the security fixes for all of the Windows 10-affected vulnerabilities shipping with this month’s security release. See Microsoft Knowledge Base Article 3097617 for more information and download links.
*The Updates Replaced column shows only the latest update in any chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is provided on the Package Details tab).
Note Windows Server Technical Preview 3 is affected. Customers running this operating system are encouraged to apply the update, which is available via Windows Update.
Update FAQ
For addressing CVE-2015-2482, CVE-2015-6052, CVE-2015-6055, and CVE-2015-6059, what updates apply to my system?
CVE-2015-2482, CVE-2015-6052, CVE-2015-6055, and CVE-2015-6059 are vulnerabilities in the VBScript engine. Although the attack vector is through Internet Explorer, the vulnerability is addressed by this update (3093983) only for systems running Internet Explorer 8, Internet Explorer 9, Internet Explorer 10, and Internet Explorer 11. For Internet Explorer 7 and earlier and for systems without Internet Explorer installed, the vulnerability is addressed by the update described in MS15-108.
The update that addresses CVE-2015-2482, CVE-2015-6052, CVE-2015-6055, and CVE-2015-6059 depends on the version of the VBScript and JScript scripting engines that are installed on your system. Consult the following table for update information.
| Version | MS15-106 | MS15-108 |
| VBScript 5.7 (Internet Explorer 7) | Not applicable | VBScript 5.7 (3094996) |
| VBScript 5.8 (Internet Explorer 8) | Internet Explorer 8 (3093983) | VBScript 5.8 (3094995) (Windows Server core installation on Windows Server 2008 R2 only) |
| VBScript 5.8 (Internet Explorer 9) | Internet Explorer 9 (3093983) | Not applicable |
| VBScript 5.8 (Internet Explorer 10) | Internet Explorer 10 (3093983) | Not applicable |
| VBScript 5.8 (Internet Explorer 11) | Internet Explorer 11 (3093983) | Not applicable |
| Abbreviation | Maximum Impact |
| RCE | Remote Code Execution |
| EoP | Elevation of Privilege |
| ID | Information Disclosure |
| SFB | Security Feature Bypass |
| **Vulnerability Severity Ratings and Impact** | |||||||
| **CVE number** | **Vulnerability title** | **Internet Explorer 7** | **Internet Explorer 8** | **Internet Explorer 9** | **Internet Explorer 10** | **Internet Explorer 11** | **Internet Explorer 11 on Windows 10** |
| [CVE-2015-2482](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-2482) | Scripting Engine Memory Corruption Vulnerability | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6042](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6042) | Internet Explorer Memory Corruption Vulnerability | Not applicable | Not applicable | Not applicable | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Not applicable |
| [CVE-2015-6044](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6044) | Internet Explorer Elevation of Privilege Vulnerability | Not applicable | Windows Clients: **Important / EoP** Windows Servers: | Not applicable | Not applicable | Not applicable | Not applicable |
| [CVE-2015-6045](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6045) | Internet Explorer Memory Corruption Vulnerability | Not applicable | Not applicable | Not applicable | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6046](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6046) | Internet Explorer Memory Corruption Vulnerability | Not applicable | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6047](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6047) | Internet Explorer Elevation of Privilege Vulnerability | Not applicable | Windows Clients: **Important / EoP** Windows Servers: | Windows Clients: **Important / EoP** Windows Servers: | Windows Clients: **Important / EoP** Windows Servers: | Windows Clients: **Important / EoP** Windows Servers: | Windows Clients: **Important / EoP** Windows Servers: |
| [CVE-2015-6048](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6048) | Internet Explorer Memory Corruption Vulnerability | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Not applicable |
| [CVE-2015-6049](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6049) | Internet Explorer Memory Corruption Vulnerability | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6050](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6050) | Internet Explorer Memory Corruption Vulnerability | Not applicable | Not applicable | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Not applicable | Not applicable |
| [CVE-2015-6051](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6051) | Internet Explorer Elevation of Privilege | Not applicable | Not applicable | Not applicable | Windows Clients: **Important / EoP** Windows Servers: | Windows Clients: **Important / EoP** Windows Servers: | Not applicable |
| [CVE-2015-6052](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6052) | VBScript and JScript ASLR Bypass | Not applicable | Windows Clients: **Important / SFB** Windows Servers: | Windows Clients: **Important / SFB** Windows Servers: | Windows Clients: **Important / SFB** Windows Servers: | Windows Clients: **Important / SFB** Windows Servers: | Windows Clients: **Important / SFB** Windows Servers: |
| [CVE-2015-6053](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6053) | Internet Explorer Information Disclosure Vulnerability | Not applicable | Not applicable | Not applicable | Not applicable | Windows Clients: **Important / ID** Windows Servers: | Windows Clients: **Important / ID** Windows Servers: |
| [CVE-2015-6055](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6055) | Scripting Engine Memory Corruption Vulnerability | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6056](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6056) | Scripting Engine Memory Corruption Vulnerability | Not applicable | Not applicable | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
| [CVE-2015-6059](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6059) | Scripting Engine Information Disclosure Vulnerability | Not applicable | Windows Clients: **Important / ID** Windows Servers: | Windows Clients: **Important / ID** Windows Servers: | Windows Clients: **Important / ID** Windows Servers: | Windows Clients: **Important / ID** Windows Servers: | Windows Clients: **Important / ID** Windows Servers: |
| [CVE-2015-6184](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-6184) | Internet Explorer Memory Corruption Vulnerability | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: | Windows Clients: **Critical / RCE** Windows Servers: |
Vulnerability Information
Multiple Internet Explorer Memory Corruption Vulnerabilities
Remote code execution vulnerabilities exist when Internet Explorer improperly accesses objects in memory. These vulnerabilities could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user.
An attacker could host a specially crafted website that is designed to exploit these vulnerabilities through Internet Explorer, 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 these vulnerabilities. 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 getting them to click a link in an instant messenger or email message that takes users to the attacker's website, or by getting them to open an attachment sent through email.
An attacker who successfully exploited these vulnerabilities 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 these vulnerabilities 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. Systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from these vulnerabilities.
The update addresses the vulnerabilities by modifying how Internet Explorer handles objects in memory.
The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:
| Vulnerability title | CVE number | Publicly disclosed | Exploited |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6042 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6045 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6046 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6048 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6049 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6050 | No | No |
| Internet Explorer Memory Corruption Vulnerability | CVE-2015-6184 | No | No |
| Vulnerability title | CVE number | Publicly disclosed | Exploited |
| Scripting Engine Memory Corruption Vulnerability | CVE-2015-2482 | No | No |
| Scripting Engine Memory Corruption Vulnerability | CVE-2015-6055 | No | No |
| Scripting Engine Memory Corruption Vulnerability | CVE-2015-6056 | Yes | No |
Mitigating Factors
Microsoft has not identified any mitigating factors for this vulnerability.
Workarounds
The following workarounds may be helpful in your situation:
Restrict access to VBScript.dll and JScript.dll
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Impact of Workaround. Websites that use VBScript or JScript may not work properly.
How to undo the workaround:
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Multiple Internet Explorer Elevation of Privilege Vulnerabilities
Elevation of privilege vulnerabilities exist when Internet Explorer does not properly validate permissions under specific conditions, potentially allowing a script to be run with elevated privileges.
In a web-based attack scenario, an attacker could host a website that is used to attempt to exploit this vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit these vulnerabilities. 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. For example, an attacker could trick users into clicking a link that takes them to the attacker's site. An attacker who successfully exploited the vulnerabilities could elevate privileges in affected versions of Internet Explorer.
The vulnerabilities by themselves do not allow arbitrary code to be run. However, the vulnerabilities could be used in conjunction with another vulnerability (e.g., a remote code execution vulnerability) that could take advantage of the elevated privileges when running arbitrary code. For example, an attacker could exploit another vulnerability to run arbitrary code through Internet Explorer, but due to the context in which processes are launched by Internet Explorer, the code might be restricted to run at a low integrity level (very limited permissions). However, an attacker could, in turn, exploit the vulnerabilities to cause the arbitrary code to run at a medium integrity level (permissions of the current user).
The update addresses the vulnerabilities by adding permission validations to Internet Explorer.
The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:
| Vulnerability title | CVE number | Publicly disclosed | Exploited |
| Internet Explorer Elevation of Privilege Vulnerability | CVE-2015-6044 | No | No |
| Internet Explorer Elevation of Privilege Vulnerability | CVE-2015-6047 | No | No |
| Internet Explorer Elevation of Privilege Vulnerability | CVE-2015-6051 | No | No |
Internet Explorer Information Disclosure Vulnerability - CVE-2015-6053
An information disclosure vulnerability exists when Internet Explorer improperly discloses the contents of its memory.
An attacker who successfully exploited this vulnerability could provide the attacker with information to further compromise the user’s system.
The update addresses the vulnerability by changing the way certain functions handle objects in memory. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was originally issued, Microsoft had not received any information to indicate that the vulnerabilities had been publicly used to attack customers.
Mitigating Factors
Microsoft has not identified any mitigating factors for this vulnerability.
Workarounds
Microsoft has not identified any workarounds for this vulnerability.
VBScript and JScript ASLR Bypass - CVE-2015-6052
A security feature bypass exists when the VBScript and JScript engines fail to use the Address Space Layout Randomization (ASLR) security feature, allowing an attacker to more reliably predict the memory offsets of specific instructions in a given call stack. The security feature bypass by itself does not allow arbitrary code execution. However, an attacker could use the ASLR bypass in conjunction with another vulnerability, such as a remote code execution vulnerability, that could take advantage of the ASLR bypass to more reliably run arbitrary code on a target system.
In a web-browsing scenario, successful exploitation of an ASLR bypass requires that a user is logged on and running an affected version of Internet Explorer, and browses to a malicious website. Therefore, any systems where a web browser is used frequently, such as workstations or terminal servers, are at the most risk from ASLR bypasses. Servers could be at more risk if administrators allow users to browse and read email on servers. However, best practices strongly discourage allowing this.
The update addresses this ASLR bypass by helping to ensure that affected versions of VBScript properly implement the ASLR security feature. Microsoft received information about this vulnerability through coordinated vulnerability disclosure. When this security bulletin was originally issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers.
Mitigating Factors
Microsoft has not identified any mitigating factors for this vulnerability.
Workarounds
The following workarounds may be helpful in your situation:
Windir Folder
Restrict access to VBScript.dll
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Impact of Workaround. Websites that use VBScript may not work properly.
How to undo the workaround:
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Scripting Engine Information Disclosure Vulnerability - CVE-2015-6059
An information disclosure vulnerability exists when JScript or VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user’s computer or data.
To exploit the vulnerability, an attacker must know the memory address of where the object was created. The update addresses the vulnerability by changing the way certain functions handle objects in memory.
Microsoft received information about this vulnerability through coordinated vulnerability disclosure. When this security bulletin was originally issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers.
Mitigating Factors
Windir System32 Mstsc Executive Branch Search
Microsoft has not identified any mitigating factors for this vulnerability.
Workarounds
The following workarounds may be helpful in your situation:
Restrict access to VBScript.dll
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Impact of Workaround. Websites that use VBScript may not work properly.
How to undo the workaround:
For 32-bit systems, enter the following command at an administrative command prompt:
For 64-bit systems, enter the following command at an administrative command prompt:
Security Update Deployment
For Security Update Deployment information see the Microsoft Knowledge Base article referenced here in the Executive Summary.
Acknowledgments
Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgments for more information.
Disclaimer
The information provided in the Microsoft Knowledge Base is provided 'as is' without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Revisions
- V1.0 (October 13, 2015): Bulletin published.
- V1.1 (October 14, 2015): Bulletin revised to correct the security impact and severity for CVE-2015-6046. This is an informational change only.
- V1.2 (October 16, 2015): Bulletin revised to announce a detection change in the 3097617 cumulative update for Windows 10. This is a detection change only. Customers who have already successfully updated their systems do not need to take any action.
- V2.0 (October 29, 2015) Bulletin revised to announce the release of a new Windows 10 cumulative update (3105210) to address an additional vulnerability, CVE-2015-6045, which has been added to this bulletin. Only customers running Windows 10 systems need to install this new update. Earlier operating systems are either not affected or have received the fix in the original updates of October 13, 2015. See Microsoft Knowledge Base Article 3105210 for more information and the download link.
- V2.1 (January 27, 2016): Bulletin revised to add CVE-2015-6184. This is an informational change only.
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