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mscveMicrosoftMS:CVE-2017-0021
HistoryMar 14, 2017 - 7:00 a.m.

Hyper-V vSMB Remote Code Execution Vulnerability

2017-03-1407:00:00
Microsoft
msrc.microsoft.com
15

7.7 High

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:S/C:C/I:C/A:C

9 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

36.5%

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate vSMB packet data. An attacker who successfully exploited these vulnerabilities could execute arbitrary code on a target operating system.

To exploit these vulnerabilities, an attacker running inside a virtual machine could run a specially crafted application that could cause the Hyper-V host operating system to execute arbitrary code.

The update addresses the vulnerabilities by correcting how Windows Hyper-V validates vSMB packet data.

7.7 High

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:S/C:C/I:C/A:C

9 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

36.5%