CVE-2018-8631

Internet Explorer Memory Corruption Vulnerability

CVE-2018-8631 is fixed in 27 products on 1 platform, first by KB4471321, released December 11, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
6.4
Moderate
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.6849
99th percentile

<p>A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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, the attacker 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.</p> <p>An attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email.</p> <p>The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Internet Explorer 10 on Windows Server 2012 KB4470199 Dec 11, 2018
Internet Explorer 10 on Windows Server 2012 KB4471330 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 14393.2665 KB4471321 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 14393.2665 KB4471321 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 15063.1506 KB4471327 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 15063.1506 KB4471327 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 16299.846 KB4471329 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems 16299.846 KB4471329 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 16299.846 KB4471329 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 17134.471 KB4471324 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems 17134.471 KB4471324 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 17134.471 KB4471324 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems 17763.194 KB4471332 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems 17763.194 KB4471332 Dec 11, 2018
Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems 17763.194 KB4471332 Dec 11, 2018
Internet Explorer 11 on Windows 10 for 32-bit Systems 10240.18063 KB4471323 Dec 11, 2018
Internet Explorer 11 on Windows 10 for x64-based Systems 10240.18063 KB4471323 Dec 11, 2018
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4471318 Dec 11, 2018
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4471318 Dec 11, 2018
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4471320 Dec 11, 2018
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4471320 Dec 11, 2018
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows RT 8.1 KB4471320 Dec 11, 2018
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4471318 Dec 11, 2018
Internet Explorer 11 on Windows Server 2012 R2 KB4471320 Dec 11, 2018
Internet Explorer 11 on Windows Server 2012 R2 KB4470199 Dec 11, 2018
Internet Explorer 11 on Windows Server 2016 14393.2665 KB4471321 Dec 11, 2018
Internet Explorer 11 on Windows Server 2019 17763.194 KB4471332 Dec 11, 2018
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4471325 Dec 11, 2018
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4470199 Dec 11, 2018
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4471325 Dec 11, 2018
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4470199 Dec 11, 2018

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