Microsoft Windows null pointer dereference

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

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Windows. This affects an unknown part. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2011-1233. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) (the affected version is unknown). It has been declared as critical. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other "Vulnerability Type 2" CVEs listed in MS11-034, aka "Win32k Null Pointer De-reference Vulnerability."

The weakness was presented 04/12/2011 (Website). It is possible to read the advisory at us-cert.gov. This vulnerability is known as CVE-2011-1233. The exploitation appears to be easy. Attacking locally is a requirement. A single authentication is needed for exploitation. 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 04/20/2025).

The vulnerability scanner Nessus provides a plugin with the ID 53391 (MS11-034: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2506223)), 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 90701 (Microsoft Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability (MS11-034)).

A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (66415), Tenable (53391), SecurityFocus (BID 47233†), OSVDB (71739†) and SecurityTracker (ID 1025345†). See VDB-4336, VDB-54584, VDB-56176 and VDB-56475 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 53391
Nessus Name: MS11-034: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2506223)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 900283
OpenVAS Name: Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (2506223)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/04/2011 🔍
04/12/2011 +39 days 🔍
04/12/2011 +0 days 🔍
04/12/2011 +0 days 🔍
04/12/2011 +0 days 🔍
04/13/2011 +0 days 🔍
04/13/2011 +0 days 🔍
03/23/2015 +1440 days 🔍
04/20/2025 +3680 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: us-cert.gov
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1233 (🔍)
GCVE (CVE): GCVE-0-2011-1233
GCVE (VulDB): GCVE-100-57103

OVAL: 🔍

X-Force: 66415
SecurityFocus: 47233
Secunia: 44156
OSVDB: 71739 - Microsoft Windows win32k.sys Driver Null Pointer De-reference Unspecified Local Privilege Escalation (2011-1233)
SecurityTracker: 1025345
Vulnerability Center: 31067 - [MS11-034] Microsoft Windows Win32k Null Pointer Dereference Privilege Escalation (CVE-2011-1233), High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 04/20/2025 00:42
Changes: 03/23/2015 16:50 (60), 04/07/2017 16:04 (6), 11/02/2021 14:27 (5), 11/02/2021 14:29 (1), 01/18/2025 19:39 (16), 04/20/2025 00:42 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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