Date: 08 November 2007
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AUSCERT External Security Bulletin Redistribution
ESB-2007.0871 -- [Win]
Vulnerability in Macrovision SECDRV.SYS Driver on Windows
Could Allow Elevation of Privilege
8 November 2007
AusCERT Security Bulletin Summary
Product: Macrovision secdrv.sys driver
Operating System: Windows Server 2003
Impact: Increased Privileges
Access: Existing Account
CVE Names: CVE-2007-5587
Revision History: November 8 2007: Updated the description on the
secdrv.sys driver. Added a Workaround
involving disabling the driver in the
November 6 2007: Initial Release
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Microsoft Security Advisory (944653)
Vulnerability in Macrovision SECDRV.SYS Driver on Windows Could Allow
Elevation of Privilege
- - Affected Software:
Microsoft Windows XP Service Pack 2
Microsoft Windows XP Professional x64 Edition
Microsoft Windows XP Professional x64 Edition Service Pack 2
Microsoft Windows Server 2003 Service Pack 1
Microsoft Windows Server 2003 with SP1 for Itanium-based Systems
Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows Server 2003 with SP2 for Itanium-based Systems
Microsoft Windows Server 2003 x64 Edition
Microsoft Windows Server 2003 x64 Edition Service Pack 2
- - Impact:
Elevation of Privilege
- - From the Microsoft Security Bulletin
What is secdrv.sys?
The driver, secdrv.sys, is used by games which use Macrovision SafeDisc.
The driver validates the authenticity of games that are protected with
SafeDisc and prohibits unauthorized copies of such games to play on
Windows. The secdrv.sys is included with Microsoft Windows XP, Windows
Server 2003 and Windows Vista to increase compatibility of the games
on Windows. Without the driver, games with SafeDisc protection would be
unable to play on Windows. SafeDisc remains inactive until invoked by a
game for authorization to play on Windows.
What causes this vulnerability?
The Macrovision secdrv.sys driver on supported editions of Windows Server
2003 and Windows XP incorrectly handles configuration parameters.
Install the update offered by Macrovision for systems running supported
editions of Windows XP and Windows Server 2003 to help protect against
this vulnerability. 
Disable the secdrv.sys driver in the system registry
Disabling the secdrv.sys driver in the system registry key helps protect
affected systems from attempts to exploit this vulnerability.
Note: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall your operating system. Microsoft cannot
guarantee that problems resulting from the incorrect use of Registry
Editor can be solved. Use Registry Editor at your own risk. For
information about how to edit the registry, view the "Changing Keys And
Values" Help topic in Registry Editor (Regedit.exe) or view the "Add and
Delete Information in the Registry" and "Edit Registry Data" Help topics
Note: We recommend backing up the registry before you edit it.
1. Click Start, click Run, type regedit and then click Continue.
2. Expand HKEY_LOCAL_MACHINE, expand SYSTEM, expand CurrentControlSet,
and then expand Services.
3. Left click on Secdrv.
4. To backup the registry before your edit it, left click on File menu,
select Export... In the Export Registry File dialog type
Secdrv_configuration_backup.reg and select Save.
5. Right click on Start, select Modify, and change Value date: to 4.
Impact of Workaround: Programs that require the secdrv.sys driver will
 Macrovision - Updating the Macrovision SECDRV.SYS Driver
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