Vulnerability CVE-2017-0021

Vulnerability Name:

CVE-2017-0021 (CCN-121404)

Assigned:

2016-09-09

Published:

2017-03-14

Updated:

2019-10-03

Summary:

Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka "Hyper-V System Data Structure Vulnerability." This vulnerability is different from that described in CVE-2017-0095.

CVSS v3 Severity:

9.0 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
7.8 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)

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

9.0 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
7.8 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)

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

CVSS v2 Severity:

7.7 High (CVSS v2 Vector: AV:A/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

7.7 High (CCN CVSS v2 Vector: AV:A/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-noinfo

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2017-0021

Source: CCN
Type: Microsoft Security Bulletin MS17-008
Security Update for Windows Hyper-V (4013082)

Source: BID
Type: Third Party Advisory, VDB Entry
96020

Source: CCN
Type: BID-96020
Microsoft Windows Hyper-V CVE-2017-0021 Memory Corruption Vulnerability

Source: SECTRACK
Type: UNKNOWN
1037999

Source: XF
Type: UNKNOWN
ms-windows-cve20170021-code-exec(121404)

Source: CONFIRM
Type: Mitigation, Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021

Vulnerable Configuration:

Configuration 1:

cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:microsoft:windows_10:*:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

Denotes that component is vulnerable

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