PT-2018-1538 · Microsoft · Windows 10 Servers+7

Published 2018-09-11 · Updated 2018-11-19 · CVE-2018-8439

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Hyper-V versions on Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers

Description A remote code execution issue exists due to improper input validation from an authenticated user on a guest operating system. This allows a remote attacker to execute arbitrary code on the host server. The vulnerability is related to insufficient input validation in the Microsoft Hyper-V hardware virtualization system for Windows operating systems.

Recommendations For Windows Server 2012 R2, consider applying security updates to address the issue. For Windows RT 8.1, apply the latest security patches. For Windows Server 2016, Windows 8.1, Windows 10, and Windows 10 Servers, update to the latest version that includes the security fix. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2018-01093

CVE-2018-8439

Affected Products

Windows

Windows 10

Windows 10 Servers

Windows 8.1

Windows Hyper-V

Windows Rt 8.1

Windows Server 2012 R2

Windows Server 2016

References · 10

• https://bdu.fstec.ru/vul/2018-01093 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2018-8439 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8439 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-8439 · Security Note
• https://osv.dev/vulnerability/CVE-2018-8439 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8439 · Security Note
• http://securitytracker.com/id/1041624 · Note
• http://securityfocus.com/bid/105233 · Note
• https://zerodayinitiative.com/blog/2018/9/11/the-september-2018-security-update-review · Note
• https://support.microsoft.com/help/4457131 · Note