Microsoft Windows 7 SP1 win32k.sys memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Windows 7 SP1 (Operating System). This issue affects an unknown code block of the file win32k.sys. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows 7 SP1 allows local users to gain privileges via a crafted application that leverages improper handling of objects in memory, aka "Win32k Buffer Overflow Vulnerability."

The weakness was released 05/14/2013 with Qihoo 360 Security Center as MS13-046 as confirmed bulletin (Microsoft Technet). The advisory is shared at technet.microsoft.com. The public release was coordinated with Microsoft. The identification of this vulnerability is CVE-2013-1333 since 01/12/2013. The exploitation is known to be difficult. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Technical details as well as a private exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/11/2021).

The vulnerability scanner Nessus provides a plugin with the ID 66422 (MS13-046: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (2840221)), 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 90887 (Microsoft Windows Kernel-Mode Driver Elevation of Privilege Vulnerabilities (MS13-046)).

Applying the patch MS13-046 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 vulnerability database at Tenable (66422). nakedsecurity.sophos.com is providing further details. Entries connected to this vulnerability are available at 8711, 8712, 8713 and 8714.

Productinfo

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  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Private
Status: Unproven

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Nessus ID: 66422
Nessus Name: MS13-046: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (2840221)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 903208
OpenVAS Name: Microsoft Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (2840221)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS13-046

Timelineinfo

01/12/2013 🔍
05/09/2013 +116 days 🔍
05/14/2013 +5 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/14/2013 +0 days 🔍
05/15/2013 +1 days 🔍
05/16/2013 +1 days 🔍
05/11/2021 +2917 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS13-046
Organization: Qihoo 360 Security Center
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-1333 (🔍)
OVAL: 🔍

Vulnerability Center: 39610 - [MS13-046] Microsoft Windows 7 SP1 Win32k Buffer Overflow Vulnerability Allows Local Privilege Escalation, High
SecurityFocus: 59785
Secunia: 53385 - Microsoft Windows Kernel Multiple Privilege Escalation Vulnerabilities, Less Critical
OSVDB: 93319 - Microsoft Windows win32k.sys Memory Object Handling Local Buffer Overflow

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Entryinfo

Created: 05/15/2013 16:38
Updated: 05/11/2021 14:21
Changes: 05/15/2013 16:38 (52), 04/07/2017 16:02 (25), 05/11/2021 14:17 (7), 05/11/2021 14:19 (2), 05/11/2021 14:21 (1)
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