__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Microsoft Cumulative Patch for BizTalk Server [Microsoft Security Bulletin MS03-016] May 1, 2003 20:00 GMT Number N-087 ______________________________________________________________________________ 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. ______________________________________________________________________________ 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. ______________________________________________________________________________ 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 ______________________________________________________________________________ [***** 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 member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. 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 legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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