Microsoft Windows up to Vista Kernel-Mode Driver win32k.sys double free

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows up to Vista. It has been classified as critical. Impacted is an unknown function of the file win32k.sys of the component Kernel-Mode Driver. This manipulation causes double free. This vulnerability is handled as CVE-2015-0058. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Microsoft Windows up to Vista (Operating System) and classified as critical. Affected by this vulnerability is an unknown code block of the file win32k.sys of the component Kernel-Mode Driver. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Double free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows 8.1, Windows Server 2012 R2, and Windows RT 8.1 allows local users to gain privileges via a crafted application, aka "Windows Cursor Object Double Free Vulnerability."

The weakness was released 02/10/2015 by n3phos with Zero Day Initiative as MS15-010 as confirmed bulletin (Technet) via ZDI (Zero Day Initiative). It is possible to read the advisory at technet.microsoft.com. This vulnerability is known as CVE-2015-0058 since 11/18/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 81263 (MS15-010: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Remote Code Execution (3036220)), 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 91016 (Microsoft Windows Kernel-Mode Driver Remote Code Execution Vulnerability (MS15-010)).

Applying the patch MS15-010 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (100432), Exploit-DB (37098), Tenable (81263), SecurityFocus (BID 72468†) and SecurityTracker (ID 1031718†). Additional details are provided at isc.sans.edu. Entries connected to this vulnerability are available at VDB-69108, VDB-69109, VDB-69110 and VDB-69111. Be aware that VulDB is the high quality source for vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 81263
Nessus Name: MS15-010: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Remote Code Execution (3036220)
Nessus File: 🔍
Nessus Risk: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS15-010

Timelineinfo

11/18/2014 🔍
02/10/2015 +84 days 🔍
02/10/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/11/2015 +1 days 🔍
02/11/2015 +0 days 🔍
06/12/2025 +3774 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-010
Researcher: n3phos
Organization: Zero Day Initiative
Status: Confirmed

CVE: CVE-2015-0058 (🔍)
GCVE (CVE): GCVE-0-2015-0058
GCVE (VulDB): GCVE-100-69151

OVAL: 🔍

X-Force: 100432
SecurityFocus: 72468 - Microsoft Windows Kernel 'Win32k.sys' CVE-2015-0058 Local Privilege Escalation Vulnerability
SecurityTracker: 1031718 - Windows Kernel-Mode Driver Flaws Let Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges
Vulnerability Center: 48597 - [MS15-010] Microsoft Windows Local Host Privilege in win32k.sys Kernel Mode Driver - CVE-2015-0058, High

scip Labs: https://www.scip.ch/en/?labs.20140213
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Entryinfo

Created: 02/11/2015 12:09
Updated: 06/12/2025 08:14
Changes: 02/11/2015 12:09 (73), 04/07/2017 14:55 (11), 03/10/2022 09:39 (3), 06/12/2025 08:14 (23)
Complete: 🔍
Cache ID: 216::103

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