CVE-2018-8438 — Improper Input Validation in Microsoft Windows 10

CWE-20 — Improper Input Validation4 documents4 sources

Severity

6.8MEDIUMNVD

CNA6.2

EPSS

1.1%

top 21.85%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Microsoft Windows 10 Microsoft Windows 10 Servers Microsoft Windows 8.1 +4 more

Timeline

PublishedSep 13

Latest updateMay 14

Description

A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system, aka "Windows Hyper-V Denial of Service Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8436, CVE-2018-8437.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:HExploitability: 2.3 | Impact: 4.0

Affected Packages9 packages

▶CVEListV5microsoft/windows_10_serversversion 1709 (Server Core Installation), version 1803 (Server Core Installation)+1

▶CVEListV5microsoft/windows_server_2016(Server Core installation)

▶CVEListV5microsoft/windows_server_2012_r2(Server Core installation)

▶NVDmicrosoft/windows_server2012

▶NVDmicrosoft/windows1709, 1803+1

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

GHSA

GHSA-6fcm-m3gp-p67j: A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged use↗2022-05-14

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CVEList

CVE-2018-8438: A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged use↗2018-09-13

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📋Vendor Advisories

Microsoft

Windows Hyper-V Denial of Service Vulnerability↗2018-09-11

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