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Microsoft MDAC Function Broadcast Response Buffer Overrun Vulnerability

Risk
High

Date Discovered
01-13-2004

Description
Microsoft has released an advisory reporting a buffer overrun vulnerability in an MDAC function. This issue is exposed when an application makes a broadcast request to query for SQL Servers on the network and malformed data is returned in the broadcast response.

Successful exploitation will allow for code execution in the context of the application using the vulnerable MDAC function. If the application is run with system-level privileges, this could completely compromise a vulnerable system. Exploitation attempts may also result in a denial of service in client applications.

Microsoft has reported that this would only result in a denial of service with MDAC 2.8.

Symantec Enterprise Security Manager
Symantec Enterprise Security Manager™ posted an update to the OS Patch Policy that detects and reports systems that are not patched against this vulnerability. Click here for the advisory released January 14, 2004.

Symantec Vulnerability Assessment
Symantec Vulnerability Assessment detects and reports this vulnerability. Click here for the advisory released January 14, 2004.

Platforms Affected
Microsoft Office 2000 SP2
Microsoft Office 2000 SR1
Microsoft SQL Server 7.0 SP2
Microsoft SQL Server 7.0 SP2 alpha
Microsoft SQL Server 7.0 SP3
Microsoft SQL Server 7.0 SP3 alpha
Microsoft SQL Server 2000
Microsoft SQL Server 2000 SP1
Microsoft SQL Server 2000 SP2
Microsoft SQL Server 2000 Desktop Engine
Microsoft Visual Studio .NET Academic Edition
Microsoft Visual Studio .NET Enterprise Architect Edition
Microsoft Visual Studio .NET Enterprise Developer Edition
Microsoft Visual Studio .NET Professional Edition
Microsoft Visual Studio .NET Trial Edition
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Advanced Server SP3
Microsoft Windows 2000 Advanced Server SP4
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Datacenter Server SP1
Microsoft Windows 2000 Datacenter Server SP2
Microsoft Windows 2000 Datacenter Server SP3
Microsoft Windows 2000 Datacenter Server SP4
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional SP2
Microsoft Windows 2000 Professional SP3
Microsoft Windows 2000 Professional SP4
Microsoft Windows 2000 Server
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Server SP4
Microsoft Windows 2000 Server Japanese Edition
Microsoft Windows 2000 Terminal Services
Microsoft Windows 2000 Terminal Services SP1
Microsoft Windows 2000 Terminal Services SP2
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Datacenter Edition 64-bit
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Enterprise Edition 64-bit
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP
Microsoft Windows XP 64-bit Edition
Microsoft Windows XP Home
Microsoft Windows XP Professional

Components Affected
Microsoft MDAC 2.5 SP3
Microsoft MDAC 2.5 SP2
Microsoft MDAC 2.5 SP1
Microsoft MDAC 2.5 RTM
Microsoft MDAC 2.5
Microsoft MDAC 2.6 SP2
Microsoft MDAC 2.6 SP1
Microsoft MDAC 2.6 RTM
Microsoft MDAC 2.6
Microsoft MDAC 2.7 SP1 Refresh
Microsoft MDAC 2.7 SP1
Microsoft MDAC 2.7 RTM Refresh
Microsoft MDAC 2.7
Microsoft MDAC 2.8

Recommendations
Block external access at the network boundary, unless service is required by external parties.
Use network access controls to filter remote access to MDAC-related ports on client systems, including UDP port 1434. External/remote access to all systems that do not require it should also be filtered to limit exposure to this and other latent vulnerabilities.

Run all client software as a non-privileged user with minimal access rights.
Ensure that any applications that use MDAC are run with the least privileges required. This will limit the consequences of successful exploitation.

Microsoft has released updates to address this issue.

Microsoft MDAC 2.5 SP3:

Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.5 SP2:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.5 SP1:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.5 RTM:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.5:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.6 SP2:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.6 SP1:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.6 RTM:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.6:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.7 SP1 Refresh:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.7 SP1:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.7 RTM Refresh:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.7:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

Microsoft MDAC 2.8:
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003 (64-bit)
http://www.microsoft.com/downloads/details.aspx?FamilyId=1D93D9E4-2B22-4595-B8C5-643824857EC0&displaylang=en
Microsoft Patch Microsoft Data Access Components (MDAC) Security Patch MS04-003
http://www.microsoft.com/downloads/details.aspx?FamilyId=39472EE8-C14A-47B4-BFCC-87988E062D91&displaylang=en

References
Source: Microsoft Security Bulletin MS04-003
URL: http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS04-003.asp

Credits
Announced by the vendor.


Copyright (c) 2004 by Symantec Corp.
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