Microsoft is releasing a set of out-of-band emergency cumulative updates to fix the flaw in Internet Explorer 11. The patches are available for all supported versions of Windows 10.
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The updates are sharing a short description that simply states Security updates to Internet Explorer. However, it includes a link to Microsoft's Security Update Guide portal, where you can find the patches listed:
Clicking on the CVE ID (CVE-2019-1367) will shed some light on the vulnerability fixed in this update.
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.
Also, Microsoft has published the list of support articles for each of updates. See these links.
- Windows version 1903 Build 18362.357 (KB4522016)
- Windows version 1809 Build 17763.740 (KB4522015)
- Windows version 1803 Build 17134.1009 (KB4522014)
- Windows version 1709 Build 16299.1392 (KB4522012)
- Windows version 1703 Build 15063.2046 (KB4522011)
- Windows version 1607 Build 14393.3206 ( KB4522010)
- Windows version 1507 Build 10240.18334 (KB4522009)
The updates are optional. This means you should install them manually when offered, or download the from the Windows Update catalog.
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