Microsoft Windows up to Server 2016 SMB Server File access control

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Windows. Affected by this issue is some unknown functionality of the component SMB Server. The manipulation as part of File results in access control. This vulnerability is cataloged as CVE-2018-0749. The attack must be initiated from a local position. Furthermore, there is an exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System). It has been classified as critical. Affected is an unknown code block of the component SMB Server. The manipulation as part of a File leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Microsoft Server Message Block (SMB) Server in Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2008 SP2 and R2 SP1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allows an elevation of privilege vulnerability due to the way SMB Server handles specially crafted files, aka "Windows Elevation of Privilege Vulnerability".

The bug was discovered 01/03/2018. The weakness was shared 01/03/2018 by James Forshaw with Google Project Zero as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2018-0749 since 12/01/2017. Local access is required to approach this attack. The requirement for exploitation is a authentication. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

An elevation of privilege vulnerability exists in the Microsoft Server Message Block (SMB) Server when an attacker with valid credentials attempts to open a specially crafted file over the SMB protocol on the same machine. An attacker who successfully exploited this vulnerability could bypass certain security checks in the operating system.

A public exploit has been developed by Google Security Research and been published 2 weeks after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. 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 Exploit-DB (43517), Tenable (105547) and SecurityFocus (BID 102355†). The entries VDB-111347, VDB-111348, VDB-111349 and VDB-111350 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.6
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
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: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

12/01/2017 🔍
01/03/2018 +33 days 🔍
01/03/2018 +0 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 🔍
01/11/2018 +6 days 🔍
01/11/2018 +0 days 🔍
09/16/2025 +2805 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

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

CVE: CVE-2018-0749 (🔍)
GCVE (CVE): GCVE-0-2018-0749
GCVE (VulDB): GCVE-100-111354

OVAL: 🔍

SecurityFocus: 102355 - Microsoft Windows Server Message Block CVE-2018-0749 Local Privilege Escalation Vulnerability
SecurityTracker: 1040096

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

Entryinfo

Created: 01/05/2018 10:01
Updated: 09/16/2025 03:00
Changes: 01/05/2018 10:01 (98), 06/06/2020 12:08 (6), 01/28/2021 13:59 (2), 09/16/2025 03:00 (15)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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