Microsoft Windows Keyboard Layout win32k.sys memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as problematic. Impacted is an unknown function of the file win32k.sys of the component Keyboard Layout. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2010-2743. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Microsoft Windows (Operating System) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the file win32k.sys of the component Keyboard Layout. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The kernel-mode drivers in Microsoft Windows XP SP3 do not properly perform indexing of a function-pointer table during the loading of keyboard layouts from disk, which allows local users to gain privileges via a crafted application, as demonstrated in the wild in July 2010 by the Stuxnet worm, aka "Win32k Keyboard Layout Vulnerability." NOTE: this might be a duplicate of CVE-2010-3888 or CVE-2010-3889.

The weakness was disclosed 09/21/2010 with 0-day as MS10-092 (Website). It is possible to read the advisory at blogs.technet.com. This vulnerability is known as CVE-2010-2743 since 07/14/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed by webDEViL and been published 3 months after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as attacked. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 49950 (MS10-073: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (981957)), 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 90611 (Microsoft Windows Kernel-Mode Drivers Privilege Elevation Vulnerability (MS10-073)).

Upgrading eliminates this vulnerability. Applying the patch MS10-073 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (15589), Zero-Day.cz (83), Tenable (49950), SecurityFocus (BID 44357†) and OSVDB (68518†). Additional details are provided at computerworld.com. The entries VDB-4151, VDB-4202 and VDB-55751 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: webDEViL
Download: 🔍

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Nessus ID: 49950
Nessus Name: MS10-073: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (981957)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902323
OpenVAS Name: Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (981957)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms10_073_kbdlayout.rb
MetaSploit Name: Windows Escalate NtUserLoadKeyboardLayoutEx Privilege Escalation
MetaSploit File: 🔍

Exploit-DB: 🔍
Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Patch: MS10-073

Timelineinfo

07/14/2010 🔍
09/21/2010 +69 days 🔍
09/22/2010 +0 days 🔍
10/12/2010 +20 days 🔍
10/12/2010 +0 days 🔍
10/13/2010 +1 days 🔍
10/18/2010 +5 days 🔍
10/19/2010 +1 days 🔍
11/20/2010 +32 days 🔍
11/20/2010 +0 days 🔍
01/20/2011 +61 days 🔍
07/17/2024 +4927 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS10-092
Organization: 0-day
Status: Confirmed

CVE: CVE-2010-2743 (🔍)
GCVE (CVE): GCVE-0-2010-2743
GCVE (VulDB): GCVE-100-4207

OVAL: 🔍

SecurityFocus: 44357 - Microsoft Windows Kernel Task Scheduler Service Local Privilege Escalation Vulnerability
Secunia: 41471 - Microsoft Windows win32k.sys Driver Keyboard Layout Privilege Escalation, Less Critical
OSVDB: 68518 - Microsoft Windows on 32-bit Task Scheduler Crafted Application Local Privilege Escalation
Vulnerability Center: 27633 - [MS10-073] Microsoft Windows Local Privilege Escalation Vulnerability via Keyboard Layouts, High

scip Labs: https://www.scip.ch/en/?labs.20161013
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Entryinfo

Created: 10/19/2010 02:00
Updated: 07/17/2024 13:13
Changes: 10/19/2010 02:00 (92), 03/07/2017 09:47 (11), 03/18/2021 13:26 (3), 07/17/2024 13:13 (17)
Complete: 🔍
Cache ID: 216:937:103

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