An information-disclosure vulnerability exists that could
allow an attacker to read files on the local file system of a user who visits a
specially malformed web site.
The attacker would not be able to add,
change, or delete files. In addition, the attacker would not be able to use
e-mail to carry out this attack; the vulnerability can only be exploited by way
of a Web site. Customers who exercise caution when browsing and avoid visiting
unknown or untrustworthy sites are at less risk from this vulnerability.
The vulnerability exists because the XMLHTTP control in the
Microsoft XML Core Services does not respect the Internet Explorer Security
Zone restrictions. This enables a Web page to specify a file on a user's local
system as an XML data source as a means of reading the file.
To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
290211Â
(http://kbalertz.com/Feedback.aspx?kbNumber=290211/
)
How to obtain the latest SQL Server 2000 service pack
The following file is available for download from the Microsoft
Download Center:
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Release Date: February 21, 2002
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591Â
(http://kbalertz.com/Feedback.aspx?kbNumber=119591/
)
How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the Date and Time tool in Control Panel.
Date Version Size File name Platform
-------------------------------------------------------------
07-Feb-2002 4.00.9406.0 1,229,312 Msxml4.dll x86
07-Feb-2002 4.00.9406.0 44,544 Msxml4a.dll x86
07-Feb-2002 4.00.9406.0 82,432 Msxml4r.dll x86
Windows Installer 2.0 or later is required to install this
fix. You may have to restart your computer after you install Windows Installer
2.0 or a later version of Windows Installer.
To download Windows Installer, visit one of the
following Microsoft Web sites:
Note Windows XP users can skip this step.
Microsoft has
confirmed that this problem may cause a degree of security vulnerability in
Microsoft XML 4.0. This problem was first corrected in Microsoft SQL Server
2000 Service Pack 3.This
problem was corrected in Microsoft XML 4.0 Service Pack
1.
To download the latest version of MSXML, visit the
following Microsoft Web site:
Affected versions of MSXML ship as part of several
products. You should apply the patch to systems with any of the following
Microsoft products:
- Microsoft Windows XP
- Microsoft Internet Explorer 6.0
- Microsoft SQL Server 2000
MSXML can also be installed separately. MSXML is installed as a
DLL in the System32 subfolder of the Windows operating system folder. On most
systems, this will likely be C:\Windows or C:\winnt. If you have any or all of
the following files in the System32 folder, you need the patch:
- Msxml2.dll
- Msxml3.dll
- Msxml4.dll
If you have only Msxml.dll, you do not need the patch because
this is an earlier, unaffected version.
Important The hotfix installer for this patch does not have an
un-install feature.
For more information about this vulnerability, see the
following Microsoft Web site: