CVE-2018-8344

Microsoft Graphics Remote Code Execution Vulnerability

CVE-2018-8344 is fixed in 31 products on 1 platform, first by KB4343887, released August 14, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
7.8
Critical
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.2298
97th percentile

<p>A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted embedded fonts. An attacker who successfully exploited the vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.</p> <p>There are multiple ways an attacker could exploit the vulnerability:</p> <ul> <li>In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince users to view the website. 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 email or instant message that takes users to the attacker's website, or by opening an attachment sent through email.</li> <li>In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit the vulnerability and then convince users to open the document file.</li> </ul> <p>The security update addresses the vulnerability by correcting how the Windows font library handles embedded fonts.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2430 KB4343887 Aug 14, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2430 KB4343887 Aug 14, 2018
Windows 10 Version 1703 for 32-bit Systems 15063.1266 KB4343885 Aug 14, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1266 KB4343885 Aug 14, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.611 KB4343897 Aug 14, 2018
Windows 10 Version 1709 for x64-based Systems 16299.611 KB4343897 Aug 14, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.228 KB4343909 Aug 14, 2018
Windows 10 Version 1803 for x64-based Systems 17134.228 KB4343909 Aug 14, 2018
Windows 10 for 32-bit Systems 10240.17946 KB4343892 Aug 14, 2018
Windows 10 for x64-based Systems 10240.17946 KB4343892 Aug 14, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows 8.1 for 32-bit systems KB4343888 Aug 14, 2018
Windows 8.1 for 32-bit systems KB4343898 Aug 14, 2018
Windows 8.1 for x64-based systems KB4343888 Aug 14, 2018
Windows 8.1 for x64-based systems KB4343898 Aug 14, 2018
Windows RT 8.1 KB4343898 Aug 14, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4343899 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4343900 Aug 14, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4344104 Aug 14, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4344104 Aug 14, 2018
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4344104 Aug 14, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 KB4344104 Aug 14, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4344104 Aug 14, 2018
Windows Server 2012 KB4343896 Aug 14, 2018
Windows Server 2012 KB4343901 Aug 14, 2018
Windows Server 2012 (Server Core installation) KB4343896 Aug 14, 2018
Windows Server 2012 (Server Core installation) KB4343901 Aug 14, 2018
Windows Server 2012 R2 KB4343888 Aug 14, 2018
Windows Server 2012 R2 KB4343898 Aug 14, 2018
Windows Server 2012 R2 (Server Core installation) KB4343888 Aug 14, 2018
Windows Server 2012 R2 (Server Core installation) KB4343898 Aug 14, 2018
Windows Server 2016 14393.2430 KB4343887 Aug 14, 2018
Windows Server 2016 (Server Core installation) 14393.2430 KB4343887 Aug 14, 2018
Windows Server, version 1709 (Server Core Installation) 16299.611 KB4343897 Aug 14, 2018
Windows Server, version 1803 (Server Core Installation) 17134.228 KB4343909 Aug 14, 2018

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.