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Last updated: 5/2/2016 3:13:41 PM

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Vulnerability Summary for CVE-2010-0232

Original release date: 01/21/2010
Last revised: 05/10/2011


The kernel in Microsoft Windows NT 3.1 through Windows 7, including Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, and Windows Server 2008 Gold and SP2, when access to 16-bit applications is enabled on a 32-bit x86 platform, does not properly validate certain BIOS calls, which allows local users to gain privileges by crafting a VDM_TIB data structure in the Thread Environment Block (TEB), and then calling the NtVdmControl function to start the Windows Virtual DOS Machine (aka NTVDM) subsystem, leading to improperly handled exceptions involving the #GP trap handler (nt!KiTrap0D), aka "Windows Kernel Exception Handler Vulnerability."


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.2 HIGH
Impact Subscore: 10.0
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: MISC
Name: http://lock.cmpxchg8b.com/c0af0967d904cef2ad4db766a00bc6af/KiTrap0D.zip
External Source: MLIST
Name: [dailydave] 20100119 We hold these axioms to be self evident
External Source: OVAL
Name: oval:org.mitre.oval:def:8344
External Source: FULLDISC
Name: 20100119 Microsoft Windows NT #GP Trap Handler Allows Users to Switch Kernel Stack
External Source: CONFIRM
Name: http://www.microsoft.com/technet/security/advisory/979682.mspx
Type: Advisory; Patch Information
External Source: SECTRACK
Name: 1023471
US-CERT Vulnerability Note: CERT
Name: TA10-040A
External Source: MS
Name: MS10-015
Type: Advisory; Patch Information
External Source: XF
Name: ms-win-gptrap-privilege-escalation(55742)
External Source: VUPEN
Name: ADV-2010-0179
Type: Advisory
External Source: BUGTRAQ
Name: 20100119 Microsoft Windows NT #GP Trap Handler Allows Users to Switch Kernel Stack
External Source: CONFIRM
Name: http://blogs.technet.com/msrc/archive/2010/01/20/security-advisory-979682-released.aspx
External Source: BID
Name: 37864

References to Check Content

Identifier: oval:org.mitre.oval:def:8344
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)