Windows 10: CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability

Brink · Sep 26, 2019

Security Vulnerability

Published: 09/23/2019

MITRE CVE-2019-1367

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. 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. 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.
In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website, for example, by sending an email.

The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.

Exploitability Assessment

The following table provides an exploitability assessment for this vulnerability at the time of original publication.

Publicly Disclosed Exploited Latest Software Release Older Software Release Denial of Service No Yes 0 - Exploitation Detected 0 - Exploitation Detected Not Applicable
Security Updates

To determine the support life cycle for your software version or edition, see the Microsoft Support Lifecycle.

Product Platform Article Download Impact Severity Supersedence Internet Explorer 10 Windows Server 2012 4522007 IE Cumulative Remote Code Execution Moderate 4516046 Internet Explorer 11 Windows 10 Version 1703 for 32-bit Systems 4522011 Security Update Remote Code Execution Critical 4512574 Internet Explorer 11 Windows 10 Version 1703 for x64-based Systems 4522011 Security Update Remote Code Execution Critical 4512574 Internet Explorer 11 Windows 10 Version 1803 for 32-bit Systems 4522014 Security Update Remote Code Execution Critical 4512576 Internet Explorer 11 Windows 10 Version 1803 for x64-based Systems 4522014 Security Update Remote Code Execution Critical 4512576 Internet Explorer 11 Windows 10 Version 1803 for ARM64-based Systems 4522014 Security Update Remote Code Execution Critical 4512576 Internet Explorer 11 Windows 10 Version 1809 for 32-bit Systems 4522015 Security Update Remote Code Execution Critical 4512577 Internet Explorer 11 Windows 10 Version 1809 for x64-based Systems 4522015 Security Update Remote Code Execution Critical 4512577 Internet Explorer 11 Windows 10 Version 1809 for ARM64-based Systems 4522015 Security Update Remote Code Execution Critical 4512577 Internet Explorer 11 Windows Server 2019 4522015 Security Update Remote Code Execution Moderate 4512577 Internet Explorer 11 Windows 10 Version 1709 for 32-bit Systems 4522012 Security Update Remote Code Execution Critical 4512575 Internet Explorer 11 Windows 10 Version 1709 for 64-based Systems 4522012 Security Update Remote Code Execution Critical 4512575 Internet Explorer 11 Windows 10 Version 1709 for ARM64-based Systems 4522012 Security Update Remote Code Execution Critical 4512575 Internet Explorer 11 Windows 10 Version 1903 for 32-bit Systems 4522016 Security Update Remote Code Execution Critical 4512578 Internet Explorer 11 Windows 10 Version 1903 for x64-based Systems 4522016 Security Update Remote Code Execution Critical 4512578 Internet Explorer 11 Windows 10 Version 1903 for ARM64-based Systems 4522016 Security Update Remote Code Execution Critical 4512578 Internet Explorer 11 Windows 10 for 32-bit Systems 4522009 Security Update Remote Code Execution Critical 4511839 Internet Explorer 11 Windows 10 for x64-based Systems 4522009 Security Update Remote Code Execution Critical 4511839 Internet Explorer 11 Windows 10 Version 1607 for 32-bit Systems 4522010 Security Update Remote Code Execution Critical 4516044 Internet Explorer 11 Windows 10 Version 1607 for x64-based Systems 4522010 Security Update Remote Code Execution Critical 4516044 Internet Explorer 11 Windows Server 2016 4522010 Security Update Remote Code Execution Moderate 4516044 Internet Explorer 11 Windows 7 for 32-bit Systems Service Pack 1 4522007 IE Cumulative Remote Code Execution Critical 4516046 Internet Explorer 11 Windows 7 for x64-based Systems Service Pack 1 4522007 IE Cumulative Remote Code Execution Critical 4516046 Internet Explorer 11 Windows 8.1 for 32-bit systems 4522007 IE Cumulative Remote Code Execution Critical 4516046 Internet Explorer 11 Windows 8.1 for x64-based systems 4522007 IE Cumulative Remote Code Execution Critical 4516046 Internet Explorer 11 Windows Server 2008 R2 for x64-based Systems Service Pack 1 4522007 IE Cumulative Remote Code Execution Moderate 4516046 Internet Explorer 11 Windows Server 2012 4522007 IE Cumulative Remote Code Execution Moderate 4516046 Internet Explorer 11 Windows Server 2012 R2 4522007 IE Cumulative Remote Code Execution Moderate 4516046 Internet Explorer 9 Windows Server 2008 for 32-bit Systems Service Pack 2 4522007 IE Cumulative Remote Code Execution Moderate 4516046 Internet Explorer 9 Windows Server 2008 for x64-based Systems Service Pack 2 4522007 IE Cumulative Remote Code Execution Moderate 4516046
Mitigations

By default, Internet Explorer on Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 and Windows Server 2019 runs in a restricted mode that is known as Enhanced Security Configuration. Enhanced Security Configuration is a group of preconfigured settings in Internet Explorer that can reduce the likelihood of a user or administrator downloading and running specially crafted web content on a server. This is a mitigating factor for websites that you have not added to the Internet Explorer Trusted sites zone.

Workarounds

Restrict access to JScript.dll

For 32-bit systems, enter the following command at an administrative command prompt:

takeown /f %windir%\system32\jscript.dll
cacls %windir%\system32\jscript.dll /E /P everyone:N

For 64-bit systems, enter the following command at an administrative command prompt:

takeown /f %windir%\syswow64\jscript.dll
cacls %windir%\syswow64\jscript.dll /E /P everyone:N
takeown /f %windir%\system32\jscript.dll
cacls %windir%\system32\jscript.dll /E /P everyone:N

Impact of Workaround

Implementing these steps might result in reduced functionality for components or features that rely on jscript.dll. To be fully protected, Microsoft recommends the update be installed as soon as possible. Please revert the mitigation steps before installing the update to return to a full state.

By default, IE11, IE10, and IE9 uses Jscript9.dll which is not impacted by this vulnerability. This vulnerability only affects certain websites that utilize jscript as the scripting engine.

How to undo the workaround

For 32-bit systems, enter the following command at an administrative command prompt:

cacls %windir%\system32\jscript.dll /E /R everyone

For 64-bit systems, enter the following command at an administrative command prompt:

cacls %windir%\system32\jscript.dll /E /R everyone
cacls %windir%\syswow64\jscript.dll /E /R everyone

FAQ

Will an updated Windows Update offline scan file, Wsusscn2.cab, with this new security update be available?
No, an updated scan file will not be available until the next security release in October 2019. As a workaround, you will need to download the September 2019 WSUS scan cab and then manually download this update from Microsoft Update Catalog to deploy.

Acknowledgements

Clément Lecigne of Google’s Threat Analysis Group
See acknowledgements 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

Version Date Description 1.0 09/23/2019 Information published.
Click to expand...

Source: https://portal.msrc.microsoft.com/en.../CVE-2019-1367

:)

Bill Smithers · Sep 26, 2019

CVE-2019-0708 on Windows Embedded Compact V7.0

Get answers in the Windows Embedded forums

https://support.microsoft.com/en-au/help/4500705/customer-guidance-for-cve-2019-0708

Customer guidance for CVE-2019-0708 | Remote Desktop Services Remote Code Execution Vulnerability: May 14, 2019

Cheers.

Brink · Sep 26, 2019

CVE-2019-1215 | Windows Elevation of Privilege Vulnerability

MITRE CVE-2019-1215

An elevation of privilege vulnerability exists in the way that ws2ifsl.sys (Winsock) handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated privileges.

To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application.

The security update addresses the vulnerability by ensuring that ws2ifsl.sys properly handles objects in memory.

[table][tr]Publicly Disclosed Exploited Latest Software Release Older Software Release Denial of Service [/tr] [tr][td]No[/td] [td]No[/td] [td]1 - Exploitation More Likely[/td] [td]1 - Exploitation More Likely[/td] [td]Not Applicable[/td] [/tr] [/table]
Click to expand...

Read more: https://portal.msrc.microsoft.com/en.../CVE-2019-1215

TD47 · Sep 26, 2019

SQLITE vulnerability CVE-2018-20346, CVE-2018-20505, CVE-2018-20506

There is a reported vulnerability in older versions of SQLITE:

See 21th Dec 2018 CVE ID has been assigned as CVE-2018-20346, CVE-2018-20505, CVE-2018-20506

Magellan - Tencent Blade Team

and

Crash Chrome 70 with the SQLite Magellan bug

However, I see that the Windows Update Installer Patch Cache uses sqlite.dll version 15.7.20033 (dated 2015):

C:\Windows\Installer\$PatchCache$\Managed\68AB67CA7DA73301B744CAF070E41400\15.7.20033\sqlite.dll

Since this is 3 years old, does anyone know if this is vulnerable?

Windows 10: CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability

CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability

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Users found this page by searching for:

by default ie11 ie10 and ie9 uses jscript9.dll which is not impacted by this vulnerability. this vulnerability only affects certain websites that utilize jscript as the scripting engine.”