CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability

    CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability

    CVE-2019-1367 IE11 Scripting Engine Memory Corruption Vulnerability


    Last Updated: 05 Oct 2019 at 12:27

    Security Vulnerability

    Published: 09/23/2019 | Last Updated : 10/03/2019

    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 4524154 Monthly Rollup Remote Code Execution Moderate 4516055
    4524135 IE Cumulative
    Internet Explorer 11 Windows 10 Version 1703 for 32-bit Systems 4524151 Security Update Remote Code Execution Critical 4522011
    Internet Explorer 11 Windows 10 Version 1703 for x64-based Systems 4524151 Security Update Remote Code Execution Critical 4522011
    Internet Explorer 11 Windows 10 Version 1803 for 32-bit Systems 4524149 Security Update Remote Code Execution Critical 4522014
    Internet Explorer 11 Windows 10 Version 1803 for x64-based Systems 4524149 Security Update Remote Code Execution Critical 4522014
    Internet Explorer 11 Windows 10 Version 1803 for ARM64-based Systems 4524149 Security Update Remote Code Execution Critical 4522014
    Internet Explorer 11 Windows 10 Version 1809 for 32-bit Systems 4524148 Security Update Remote Code Execution Critical 4522015
    Internet Explorer 11 Windows 10 Version 1809 for x64-based Systems 4524148 Security Update Remote Code Execution Critical 4522015
    Internet Explorer 11 Windows 10 Version 1809 for ARM64-based Systems 4524148 Security Update Remote Code Execution Critical 4522015
    Internet Explorer 11 Windows Server 2019 4524148 Security Update Remote Code Execution Moderate 4522015
    Internet Explorer 11 Windows 10 Version 1709 for 32-bit Systems 4524150 Security Update Remote Code Execution Critical 4522012
    Internet Explorer 11 Windows 10 Version 1709 for 64-based Systems 4524150 Security Update Remote Code Execution Critical 4522012
    Internet Explorer 11 Windows 10 Version 1709 for ARM64-based Systems 4524150 Security Update Remote Code Execution Critical 4522012
    Internet Explorer 11 Windows 10 Version 1903 for 32-bit Systems 4524147 Security Update Remote Code Execution Critical 4522016
    Internet Explorer 11 Windows 10 Version 1903 for x64-based Systems 4524147 Security Update Remote Code Execution Critical 4522016
    Internet Explorer 11 Windows 10 Version 1903 for ARM64-based Systems 4524147 Security Update Remote Code Execution Critical 4522016
    Internet Explorer 11 Windows 10 for 32-bit Systems 4524153 Security Update Remote Code Execution Critical 4522009
    Internet Explorer 11 Windows 10 for x64-based Systems 4524153 Security Update Remote Code Execution Critical 4522009
    Internet Explorer 11 Windows 10 Version 1607 for 32-bit Systems 4524152 Security Update Remote Code Execution Critical 4522010
    Internet Explorer 11 Windows 10 Version 1607 for x64-based Systems 4524152 Security Update Remote Code Execution Critical 4522010
    Internet Explorer 11 Windows Server 2016 4524152 Security Update Remote Code Execution Moderate 4522010
    Internet Explorer 11 Windows 7 for 32-bit Systems Service Pack 1 4524157 Monthly Rollup Remote Code Execution Critical 4516065
    4524135 IE Cumulative
    Internet Explorer 11 Windows 7 for x64-based Systems Service Pack 1 4524157 Monthly Rollup Remote Code Execution Critical 4516065
    4524135 IE Cumulative
    Internet Explorer 11 Windows 8.1 for 32-bit systems 4524156 Monthly Rollup Remote Code Execution Critical 4516067
    4524135 IE Cumulative
    Internet Explorer 11 Windows 8.1 for x64-based systems 4524156 Monthly Rollup Remote Code Execution Critical 4516067
    4524135 IE Cumulative
    Internet Explorer 11 Windows Server 2008 R2 for x64-based Systems Service Pack 1 4524157 Monthly Rollup Remote Code Execution Moderate 4516065
    4524135 IE Cumulative
    Internet Explorer 11 Windows Server 2012 4524135 IE Cumulative Remote Code Execution Moderate 4522007
    Internet Explorer 11 Windows Server 2012 R2 4524156 Monthly Rollup Remote Code Execution Moderate 4516067
    4524135 IE Cumulative
    Internet Explorer 9 Windows Server 2008 for 32-bit Systems Service Pack 2 4524135 IE Cumulative Remote Code Execution Moderate 4522007
    Internet Explorer 9 Windows Server 2008 for x64-based Systems Service Pack 2 4524135 IE Cumulative Remote Code Execution Moderate 4522007

    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?
    Yes. An updates scan file will be available at the time of, or shortly after, the release.

    I am running Internet Explorer 9 on Windows Server 2008. Is there a Monthly Rollup available?
    No. The IE Cumulative update for Windows Server 2008 contains all of the fixes needed to address this vulnerability and the known printer issue. As such, we are making the IECU available via Windows Update, in addition to WSUS and Microsoft Update, for customers running Windows Server 2008.

    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.
    2.0 10/03/2019 To address a known printing issue customers might experience after installing the Security Updates or IE Cumulative updates that were released on September 23, 2019 for CVE-2019-1367, Microsoft is releasing new Security Updates, IE Cumulative Updates, and Monthly Rollup updates for all applicable installations of Internet Explorer 9, 10, or 11 on Microsoft Windows. Please see the Security Updates table for CVE-2019-1367 for the new updates. Note that these updates are available automatically via Windows Update, WSUS, or manually from the Microsoft Update Catalog. This release is separate from the October Update Tuesday release, which is scheduled for October 8, 2019.

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

    Brink's Avatar Posted By: Brink
    23 Sep 2019


  1. Posts : 61,926
    64-bit Windows 11 Pro for Workstations
       #1

    Updated on 10/3.
      My Computers


  2. Posts : 568
    Windows 11 Pro
       #2

    ZDNet is reporting that you have to manually install the latest iteration of this patch post initial release.
    Windows out-of-band update: Microsoft's mandatory security patch is for all versions | ZDNet
      My Computers


 

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