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Title: Microsoft Windows 2000/XP GDI Denial of Service Vulnerability

Severity: LOW

Description:

The Windows Graphics Device Interface (GDI) is a set of Application Programming Interfaces (APIs) used to display graphical output.

A vulnerability exists which causes the GDI to invoke a Kernel Mode Exception due to a memory access error. This action will result in a system stop error (bluescreen). The problem occurs in win32k.sys, which is the Windows component that handles the GDI.

This condition may be due to an inability of the GDI API to handle requests with malformed or invalid arguments or flags.

A reboot of the system will allow normal system recovery.

This vulnerability can be exploited regardless of the current user's permission level on the system.

Affected Products:

• Avaya DefinityOne Media Servers
• Avaya IP600 Media Servers
• Avaya S3400 Message Application Server
• Avaya S8100 Media Servers
• Microsoft Windows 2000 Advanced Server
• Microsoft Windows 2000 Advanced Server SP1
• Microsoft Windows 2000 Advanced Server SP2
• Microsoft Windows 2000 Datacenter Server
• Microsoft Windows 2000 Datacenter Server SP1
• Microsoft Windows 2000 Datacenter Server SP2
• Microsoft Windows 2000 Professional
• Microsoft Windows 2000 Professional SP1
• Microsoft Windows 2000 Professional SP2
• Microsoft Windows 2000 Server
• Microsoft Windows 2000 Server SP1
• Microsoft Windows 2000 Server SP2
• Microsoft Windows XP Home
• Microsoft Windows XP Professional

References:

• Microsoft: Microsoft Technet Security
• NTBugTraq Archive: A GDI bug.

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