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The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
Microsoft Cumulative Patch for BizTalk Server
[Microsoft Security Bulletin MS03-016]
May 1, 2003 20:00 GMT Number N-087
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PROBLEM: Two vulnerabilities exist in the BizTalk Server:
(1) The first vulnerability affects Microsoft BizTalk Server
2002 only. A buffer overrun exists in the component used to
receive HTTP documents.
(2) The second vulnerability affects both Microsoft BizTalk
Server 2000 and BizTalk Server 2002. A SQL injection vulnerability
exists in some of the pages used by the Document Tracking and
Administration (DTA) that could allow an attacker to send a
crafted URL query string to a legitimate DTA user who could then
send it on to the server to cause a compromise.
PLATFORM: * Microsoft BizTalk Server 2000
* Microsoft BizTalk Server 2002
DAMAGE: Exploiting the first vulnerability could allow an attacker to
run code of their choice.
SOLUTION: Apply patch as indicated in Microsoft's bulletin.
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VULNERABILITY The risk is MEDIUM. In the first vulnerability,the HTTP
ASSESSMENT: receiver is the component used to receive HTTP documents
therefore, an attacker may be able to execute code of their
choice on the BizTalk Server. In the second vulnerability, if
an attacker sends a crafted URL query string to a legitimate
DTA user, and the DTA user were to navigate to the URL sent by
the attacker, the user could execute a malicious embedded SQL
statement in the query string.
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LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/n-087.shtml
ORIGINAL BULLETIN:
http://www.microsoft.com/technet/treeview/
default.asp?url=/technet/security/bulletin/MS03-016.asp
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[***** Start Microsoft Security Bulletin MS03-016 *****]
Microsoft Security Bulletin MS03-016
Cumulative Patch for BizTalk Server (815206)
Originally posted: April 30, 2003
Summary
Who should read this bulletin: Systems Administrators using
Microsoft BizTalk 2000 Server and BizTalk 2002 Server
Impact of vulnerability: Two vulnerabilities, the most serious of which
could allow an attacker to run code of their choice
Maximum Severity Rating: Important
Recommendation: Systems Administrators using Microsoft BizTalk should
consider applying the patch.
Affected Software:
* Microsoft BizTalk Server 2000
* Microsoft BizTalk Server 2002
Technical details
Technical description:
Microsoft BizTalk Server is an Enterprise Integration product that allows
organizations to integrate applications, trading partners, and business
processes. BizTalk is used in intranet environments to transfer business
documents between different back-end systems as well as extranet
environments to exchange structured messages with trading partners.
This patch addresses two newly reported vulnerabilities in BizTalk Server.
The first vulnerability affects Microsoft BizTalk Server 2002 only. BizTalk
Server 2002 provides the ability to exchange documents using the HTTP format.
A buffer overrun exists in the component used to receive HTTP documents
– the HTTP receiver – and could result in an attacker being able to execute
code of their choice on the BizTalk Server.
The second vulnerability affects both Microsoft BizTalk Server 2000 and
BizTalk Server 2002. BizTalk Server provides the ability for administrators
to manage documents via a Document Tracking and Administration (DTA) web
interface. A SQL injection vulnerability exists in some of the pages used by
DTA that could allow an attacker to send a crafted URL query string to a
legitimate DTA user. If that user were to then navigate to the URL sent by
the attacker, he or she could execute a malicious embedded SQL statement in
the query string.
Mitigating factors:
HTTP Receiver Buffer Overflow
* The HTTP Receiver is only present in Microsoft BizTalk Server 2002. BizTalk
Server 2000 is not affected by this vulnerability.
* The HTTP receiver is not enabled by default. HTTP must be explicitly enabled
as a receive transport during the setup of a BizTalk site.
* If the vulnerability was exploited to run arbitrary code, the code would run
in the security context of the IIS Server. If the IIS Server is running under
a user account, the attacker’s permissions will be limited to those of this
user account.
DTA SQL Injection
* DTA users by default are not highly privileged SQL users such as database
owners, since they are only required to be members of “BizTalk Server Report
Users” security group in order to use DTA web interface. In this case, a
successful attacker’s permissions on the SQL Server will be restricted.
Severity Rating:
Microsoft BizTalk Server 2000 Moderate
Microsoft BizTalk Server 2002 Important
The above assessment is based on the types of systems affected by the
vulnerability, their typical deployment patterns, and the effect that exploiting
the vulnerability would have on them.
Vulnerability identifiers:
* HTTP Receiver Buffer Overflow: CAN-2003-0117
* DTA SQL Injection: CAN-2003-0118
Tested Versions:
Microsoft tested Microsoft BizTalk Server 2000 and BizTalk Server 2002 to
assess whether they are affected by these vulnerabilities.
Patch availability
Download locations for this patch
* Microsoft BizTalk Server 2000:
http://microsoft.com/downloads/details.aspx?FamilyId=001E93E4-0E6E-4289
-AEFE-9161D2E5AF97&displaylang=en
* Microsoft BizTalk Server 2002:
http://microsoft.com/downloads/details.aspx?FamilyId=A05344FE-2622-4887
-AA45-3DE7C4ED3C75&displaylang=en
Additional information about this patch
Installation platforms:
This patch can be installed on systems running BizTalk Server 2002 Gold and
BizTalk Server 2000 Service Pack 2.
Inclusion in future service packs:
The fix for this issue will be included in Service Pack 1 for BizTalk Server
2002 and Service Pack 3 for BizTalk 2000.
Reboot needed:
* BizTalk Server 2000: No
* BizTalk Server 2002: No. However, if a file that is being replaced is open,
Setup will prompt you to restart the system so the file can be safely updated
Patch can be uninstalled: Yes
Superseded patches: None.
Verifying patch installation:
* BizTalk Server 2000:
* To ensure you have the fix installed properly, verify the individual files
by consulting the date/time stamp of the files listed in the file manifest in
Microsoft Knowledge Base article at
http://support.microsoft.com/support/misc/kblookup.asp?id= 815207
* BizTalk Server 2002 To verify the individual files, use the date/time and
version information provided in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\…\815208\Filelist
Caveats:
BizTalk 2002:
The Biztalkhttpreceive.dll file, which is the ISAPI extension for the BizTalk
HTTP Receive function, can be moved into locations other than the default location,
such as an additional Virtual Directory. This is discussed more in the following
MSDN Article: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/
bts_2002/htm/lat_admin_server_check_hfos.asp
If your system has been configured in this way, you must copy the new version of
Biztalkhttpreceive.dll into these additional locations, as discussed in Microsoft
Knowledge Base article 815208
Localization:
Localized versions of this patch are available at the locations discussed in “Patch
Availability”.
Obtaining other security patches:
Patches for other security issues are available from the following locations:
* Security patches are available from the Microsoft Download Center, and can be most
easily found by doing a keyword search for "security_patch".
* Patches for consumer platforms are available from the WindowsUpdate web site
Other information:
Acknowledgments
Microsoft thanks Cesar Cerrudo for reporting this issue to us and working with us
to protect customers.
Support:
* Microsoft Knowledge Base article 815206 discusses this issue and will be available
approximately 24 hours after the release of this bulletin. Knowledge Base articles
can be found on the Microsoft Online Support web site.
* Technical support is available from Microsoft Product Support Services. There is no
charge for support calls associated with security patches.
Security Resources: The Microsoft TechNet Security Web Site provides additional
information about security in Microsoft products.
Disclaimer:
The information provided in the Microsoft Knowledge Base is provided "as is" without
warranty of any kind. Microsoft disclaims all warranties, either express or implied,
including the warranties of merchantability and fitness for a particular purpose. In
no event shall Microsoft Corporation or its suppliers be liable for any damages
whatsoever including direct, indirect, incidental, consequential, loss of business
profits or special damages, even if Microsoft Corporation or its suppliers have been
advised of the possibility of such damages. Some states do not allow the exclusion or
limitation of liability for consequential or incidental damages so the foregoing
limitation may not apply.
Revisions:
* V1.0 (April 30, 2003): Bulletin Created.
[***** End Microsoft Security Bulletin MS03-016 *****]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Microsoft Corporation for the
information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
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This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
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