ID CVE-2017-0021
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.
Vulnerable Configurations
  • Microsoft Windows Server 2016
  • cpe:2.3:o:microsoft:windows_10:1607
Base: 7.7 (as of 21-03-2017 - 10:14)
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
msbulletin via4
nessus via4
NASL family Windows : Microsoft Bulletins
description The remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - Multiple remote code execution vulnerabilities exist due to improper validation of vSMB packets. An attacker on a guest operating system can exploit these vulnerabilities, via a specially crafted application, to execute arbitrary code on the host. (CVE-2017-0021, CVE-2017-0095) - Multiple denial of service vulnerabilities exist due to improper validation of input from a privileged user on a guest operating system. An attacker with a privileged account on a guest operating system can exploit these vulnerabilities, via a specially crafted application, to crash the host machine. (CVE-2017-0051, CVE-2017-0074, CVE-2017-0076, CVE-2017-0097, CVE-2017-0098, CVE-2017-0099) Note that customers who have not enabled the Hyper-V role are not affected.
last seen 2019-01-16
modified 2018-11-15
plugin id 97745
published 2017-03-15
reporter Tenable
title MS17-008: Security Update for Windows Hyper-V (4013082)
refmap via4
bid 96020
sectrack 1037999
Last major update 21-03-2017 - 13:40
Published 16-03-2017 - 20:59
Last modified 17-07-2017 - 09:18
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