Vulnerability CVE-2018-8437

Vulnerability Name:

CVE-2018-8437 (CCN-149044)

Assigned:

2018-09-11

Published:

2018-09-11

Updated:

2018-11-02

Summary:

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 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8436, CVE-2018-8438.

CVSS v3 Severity:

6.2 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H)
5.4 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Adjacent Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Adjacent Attack Complexity (AC): High Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

5.5 Medium (CVSS v2 Vector: AV:A/AC:L/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

4.3 Medium (CCN CVSS v2 Vector: AV:A/AC:H/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-20

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-8437

Source: BID
Type: Third Party Advisory, VDB Entry
105237

Source: CCN
Type: BID-105237
Microsoft Windows Hyper-V CVE-2018-8437 Remote Denial of Service Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1041624

Source: XF
Type: UNKNOWN
ms-hyperv-cve20188437-dos(149044)

Source: CCN
Type: Microsoft Security TechCenter - September 2018
Windows Hyper-V Denial of Service Vulnerability

Source: CONFIRM
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8437

Vulnerable Configuration:

Configuration 1:

cpe:/o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:*

Configuration CCN 1:

cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server:1803:*:*:*:*:*:*:*

Denotes that component is vulnerable

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