Microsoft Windows null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been classified as problematic. Affected is an unknown function. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2011-1231. Local access is required to approach this attack. There is no exploit available. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) (affected version not known) and classified as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is 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 released 04/12/2011 by Tarjei Mandt with Norman (Website). The advisory is shared at us-cert.gov. The identification of this vulnerability is CVE-2011-1231. The exploitation is known to be easy. An attack has to be approached locally. A simple authentication is required for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/02/2025).

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 (66413), Tenable (53391), SecurityFocus (BID 47231†), OSVDB (71737†) and SecurityTracker (ID 1025345†). Entries connected to this vulnerability are available at VDB-4336, VDB-54584, VDB-56176 and VDB-56475. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.6

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

CNA Base Score: 8.4
CNA 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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

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 🔍
04/12/2011 +0 days 🔍
04/13/2011 +0 days 🔍
04/13/2011 +0 days 🔍
03/23/2015 +1440 days 🔍
02/02/2025 +3604 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: us-cert.gov
Researcher: Tarjei Mandt
Organization: Norman
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1231 (🔍)
GCVE (CVE): GCVE-0-2011-1231
GCVE (VulDB): GCVE-100-57101

OVAL: 🔍

X-Force: 66413
SecurityFocus: 47231 - Microsoft Windows Kernel 'Win32k.sys' (CVE-2011-1231) Local Privilege Escalation Vulnerability
Secunia: 44156
OSVDB: 71737 - Microsoft Windows win32k.sys Driver Null Pointer De-reference Unspecified Local Privilege Escalation (2011-1231)
SecurityTracker: 1025345
Vulnerability Center: 31065 - [MS11-034] Microsoft Windows Win32k Null Pointer Dereference Privilege Escalation (CVE-2011-1231), High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 02/02/2025 20:54
Changes: 03/23/2015 16:50 (61), 04/07/2017 16:04 (10), 11/02/2021 14:11 (5), 11/02/2021 14:16 (1), 10/17/2024 23:04 (26), 01/18/2025 19:25 (2), 02/02/2025 20:54 (1)
Complete: 🔍
Cache ID: 216:1E2:103

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