Microsoft Windows up to Server 2016 Kernel nt!NtQuerySystemInformation information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Microsoft Windows up to Server 2016 (Operating System). This affects the function nt!NtQuerySystemInformation of the component Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Windows kernel in Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allows an information disclosure vulnerability due to the way memory addresses are handled, aka "Windows Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0745 and CVE-2018-0747.

The bug was discovered 01/03/2018. The weakness was released 01/03/2018 by Mateusz Jurczyk with Google Project Zero as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2018-0746 since 12/01/2017. Attacking locally is a requirement. A authentication is required for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. The advisory points out:

An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows kernel handles memory addresses.

A public exploit has been developed by Google Security Research and been published 6 days after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 105547 (KB4056888: Windows 10 Version 1511 January 2018 Security Update (Meltdown)(Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91423 (Microsoft Windows Security Update (ADV180002) (Spectre/Meltdown)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105547) and Exploit-DB (43471). Entries connected to this vulnerability are available at 111347, 111348, 111349 and 111350.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
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Vendor Base Score (Microsoft): 4.7
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.7
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CVSSv2info

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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Download: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 105547
Nessus Name: KB4056888: Windows 10 Version 1511 January 2018 Security Update (Meltdown)(Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 870324
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4056892)
OpenVAS File: 🔍
OpenVAS Family: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

12/01/2017 🔍
01/03/2018 +33 days 🔍
01/03/2018 +0 days 🔍
01/03/2018 +0 days 🔍
01/04/2018 +1 days 🔍
01/04/2018 +0 days 🔍
01/05/2018 +1 days 🔍
01/09/2018 +4 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/28/2021 +1115 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Mateusz Jurczyk
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0746 (🔍)
OVAL: 🔍

SecurityTracker: 1040097
SecurityFocus: 102365 - Microsoft Windows Kernel CVE-2018-0746 Local Information Disclosure Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 01/05/2018 10:00
Updated: 01/28/2021 13:42
Changes: 01/05/2018 10:00 (98), 06/06/2020 11:49 (6), 01/28/2021 13:42 (3)
Complete: 🔍

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