Microsoft Windows up to Server 2016 Win32k access control

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. This impacts an unknown function of the component Win32k. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2018-8124. Local access is required to approach this attack. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System). It has been rated as critical. This issue affects an unknown function of the component Win32k. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The bug was discovered 05/08/2018. The weakness was disclosed 05/08/2018 with Zero Day Initiative as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The identification of this vulnerability is CVE-2018-8124 since 03/14/2018. The exploitation is known to be difficult. Attacking locally is a requirement. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/11/2023). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 109610 (KB4103726: Windows Server 2012 May 2018 Security Update), 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 91447 (Microsoft Windows Security Update May 2018).

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 (109610) and SecurityFocus (BID 104037†). The entries VDB-117441, VDB-117442, VDB-117443 and VDB-117444 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.0
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109610
Nessus Name: KB4103726: Windows Server 2012 May 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 52254
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4103725)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
05/08/2018 +55 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/09/2018 +0 days 🔍
05/09/2018 +0 days 🔍
03/11/2023 +1767 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Zero Day Initiative
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-8124 (🔍)
GCVE (CVE): GCVE-0-2018-8124
GCVE (VulDB): GCVE-100-117467

OVAL: 🔍

SecurityFocus: 104037 - Microsoft Windows Kernel 'Win32k.sys' CVE-2018-8124 Local Privilege Escalation Vulnerability
SecurityTracker: 1040849

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

Entryinfo

Created: 05/09/2018 14:29
Updated: 03/11/2023 08:35
Changes: 05/09/2018 14:29 (87), 02/03/2020 10:51 (6), 03/11/2023 08:35 (5)
Complete: 🔍
Cache ID: 216::103

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