Windows Hyper-V Information Disclosure Vulnerability
CVE-2018-8434 is fixed in 20 products on 1 platform, first by KB4457131, released September 11, 2018. It is not reported as exploited. Patch Radar priority: Routine.
<p>An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker on a guest operating system could run a specially crafted application that could cause the Hyper-V host operating system to disclose memory information.</p> <p>An attacker who successfully exploited the vulnerability could gain access to information on the Hyper-V host operating system.</p> <p>The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for x64-based Systems | 14393.2485 | KB4457131 | Sep 11, 2018 |
| Windows 10 Version 1703 for x64-based Systems | 15063.1324 | KB4457138 | Sep 11, 2018 |
| Windows 10 Version 1709 for x64-based Systems | 16299.665 | KB4457142 | Sep 11, 2018 |
| Windows 10 Version 1803 for x64-based Systems | 17134.285 | KB4457128 | Sep 11, 2018 |
| Windows 10 for x64-based Systems | 10240.17976 | KB4457132 | Sep 11, 2018 |
| Windows 7 for x64-based Systems Service Pack 1 | KB4457144 | Sep 11, 2018 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB4457145 | Sep 11, 2018 | |
| Windows 8.1 for x64-based systems | KB4457129 | Sep 11, 2018 | |
| Windows 8.1 for x64-based systems | KB4457143 | Sep 11, 2018 | |
| Windows RT 8.1 | KB4457129 | Sep 11, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4457144 | Sep 11, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4457145 | Sep 11, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4457144 | Sep 11, 2018 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4457145 | Sep 11, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4457984 | Sep 11, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB4458010 | Sep 11, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4457984 | Sep 11, 2018 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB4458010 | Sep 11, 2018 | |
| Windows Server 2012 | KB4457135 | Sep 11, 2018 | |
| Windows Server 2012 | KB4457140 | Sep 11, 2018 | |
| Windows Server 2012 (Server Core installation) | KB4457135 | Sep 11, 2018 | |
| Windows Server 2012 (Server Core installation) | KB4457140 | Sep 11, 2018 | |
| Windows Server 2012 R2 | KB4457129 | Sep 11, 2018 | |
| Windows Server 2012 R2 | KB4457143 | Sep 11, 2018 | |
| Windows Server 2012 R2 (Server Core installation) | KB4457129 | Sep 11, 2018 | |
| Windows Server 2012 R2 (Server Core installation) | KB4457143 | Sep 11, 2018 | |
| Windows Server 2016 | 14393.2485 | KB4457131 | Sep 11, 2018 |
| Windows Server 2016 (Server Core installation) | 14393.2485 | KB4457131 | Sep 11, 2018 |
| Windows Server, version 1709 (Server Core Installation) | 16299.665 | KB4457142 | Sep 11, 2018 |
| Windows Server, version 1803 (Server Core Installation) | 17134.285 | KB4457128 | Sep 11, 2018 |