CVE-2010-0232
CVE-2010-0232
CVSS 7.8 HIGHEPSS 29.3%● KEV
In short
Windows kernel fails to properly validate BIOS calls when running 16-bit applications, allowing a local attacker to craft malicious data structures that trigger exceptions in the kernel's trap handler, leading to privilege escalation.
Technical detail
A local privilege escalation vulnerability exists in the Windows kernel's Virtual DOS Machine (NTVDM) subsystem when 16-bit application support is enabled on 32-bit x86 systems. The vulnerability stems from improper validation of BIOS calls and exception handling in the #GP trap handler (nt!KiTrap0D). An attacker can exploit this by crafting a malicious VDM_TIB structure in the Thread Environment Block and invoking NtVdmControl, causing the kernel to execute privileged code in an attacker-controlled context.
Summary generated and translated by AI from the official description.
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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