Microsoft Windows up to Server 2012 R2 Kernel-Mode Driver win32k.sys Kernel Memory information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Microsoft Windows up to Server 2012 R2. The impacted element is an unknown function in the library win32k.sys of the component Kernel-Mode Driver. Executing a manipulation can lead to information disclosure (Kernel Memory). This vulnerability appears as CVE-2015-2381. The attack requires local access. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in Microsoft Windows up to Server 2012 R2 (Operating System) and classified as problematic. This vulnerability affects an unknown function in the library win32k.sys of the component Kernel-Mode Driver. The manipulation with an unknown input leads to a information disclosure vulnerability (Kernel Memory). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

win32k.sys in the kernel-mode drivers in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows local users to obtain sensitive information from kernel memory via a crafted application, aka "Win32k Information Disclosure Vulnerability," a different vulnerability than CVE-2015-2382.

The weakness was presented 07/14/2015 as MS15-073 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability was named CVE-2015-2381. The attack needs to be approached locally. The successful exploitation requires a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 84747 (MS15-073: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (3070102)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91065 (Microsoft Windows Kernel-Mode Driver Elevation of Privilege Vulnerabilities (MS15-073)).

Applying the patch MS15-073 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com.

The vulnerability is also documented in the databases at Tenable (84747), SecurityFocus (BID 75662†) and Vulnerability Center (SBV-51229†). See VDB-76450, VDB-76452, VDB-76453 and VDB-76454 for similar entries. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Name: Kernel Memory
Class: Information disclosure / Kernel Memory
CWE: CWE-200 / CWE-284 / CWE-266
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: 84747
Nessus Name: MS15-073: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (3070102)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS15-073

Timelineinfo

03/19/2015 🔍
07/14/2015 +117 days 🔍
07/14/2015 +0 days 🔍
07/14/2015 +0 days 🔍
07/15/2015 +1 days 🔍
07/15/2015 +0 days 🔍
05/31/2022 +2512 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-073
Status: Confirmed

CVE: CVE-2015-2381 (🔍)
GCVE (CVE): GCVE-0-2015-2381
GCVE (VulDB): GCVE-100-76468

OVAL: 🔍

SecurityFocus: 75662
SecurityTracker: 1032904
Vulnerability Center: 51229 - [MS15-073] Microsoft Windows Local Information Disclosure in win32k.sys Kernel-Mode Drivers - CVE-2015-2381, Low

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 07/15/2015 13:53
Updated: 05/31/2022 15:03
Changes: 07/15/2015 13:53 (46), 05/03/2019 08:01 (17), 05/31/2022 14:57 (2), 05/31/2022 15:02 (7), 05/31/2022 15:03 (1)
Complete: 🔍
Cache ID: 216::103

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