__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN ISA Server 2000 Cumulative Update [Microsoft Security Bulletin MS05-034] June 14, 2005 22:00 GMT Number P-228 ______________________________________________________________________________ PROBLEM: This cumulative update addresses two security vulnerabilities in ISA Server 2000, including: an HTTP Content Header Vulnerability and a NetBIOS Predefined Filter Vulnerability. PLATFORM: Microsoft Internet Security and Acceleration (ISA) Server 2000 Service Pack 2 Note The following software programs include ISA Server 2000. Customers who use these software programs should install the provided ISA Server 2000 security update. Microsoft Small Business Server 2000 Microsoft Small Business Server 2003 Premium Edition DAMAGE: An attacker could exploit the HTTP Content Header vulnerability by constructing a malicious HTTP request that could potentially allow an attacker to poison the cache of the affected ISA server. Also, an attacker could create a NetBIOS connection with an ISA Server by utilizing the NetBIOS (all) predefined packet filter. The attacker would be limited to services that use the NetBIOS protocol running on the affected ISA Server. SOLUTION: Apply the security update. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Exploiting these vulnerabilities may lead ASSESSMENT: to cache poisoning and/or elevation of privilege. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-228.shtml ORIGINAL BULLETIN: http://www.microsoft.com/technet/security/Bulletin/MS05-034.mspx CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2005-1215, CAN-2005-1216 ______________________________________________________________________________ [***** Start Microsoft Security Bulletin MS05-034 *****] Microsoft Security Bulletin MS05-034 Cumulative Security Update for ISA Server 2000 (899753) Issued: June 14, 2005 Version: 1.0 Summary Who should read this document: Customers who use Microsoft Internet Security and Acceleration (ISA) Server 2000 Impact of Vulnerability: Elevation of Privilege Maximum Severity Rating: Moderate Recommendation: Customers should consider applying the security update. Security Update Replacement: None Caveats: None Tested Software and Security Update Download Locations: Affected Software: • Microsoft Internet Security and Acceleration (ISA) Server 2000 Service Pack 2 – Download the update Note The following software programs include ISA Server 2000. Customers who use these software programs should install the provided ISA Server 2000 security update. • Microsoft Small Business Server 2000 • Microsoft Small Business Server 2003 Premium Edition Non-Affected Software: • Microsoft Internet Security and Acceleration (ISA) Server 2004 Standard Edition • Microsoft Internet Security and Acceleration (ISA) Server 2004 Enterprise Edition The software in this list has been tested to determine whether the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support life cycle for your product and version, visit the Microsoft Support Lifecycle Web site. General Information Executive Summary: This update resolves several newly-discovered, privately reported vulnerabilities. Each vulnerability is documented in this bulletin in its own “Vulnerability Details” section of this bulletin. We recommend that customers consider applying the security update. Severity Ratings and Vulnerability Identifiers: Vulnerability Identifiers - HTTP Content Header Vulnerability - CAN-2005-1215 Impact of Vulnerability - Elevation of Privilege, Cache Poisoning ISA Server 2000 - Moderate Vulnerability Identifiers - NetBIOS Predefined Filter Vulnerability - CAN-2005-1216 Impact of Vulnerability - Elevation of Privilege ISA Server 2000 - Moderate Aggregate Severity of All Vulnerabilities - Moderate This assessment is based on the types of systems that are affected by the vulnerability, their typical deployment patterns, and the effect that exploiting the vulnerability would have on them. Security Update Information ISA Server 2000 Service Pack 2, Small Business Server 2000, Small Business Server 2000 Service Pack 1, Small Business Server 2003 Acknowledgments Microsoft thanks the following for working with us to help protect customers: •Steve Orrin of Watchfire for reporting the HTTP Content Header Vulnerability (CAN-2005-1215). •Han Valk for reporting the Basic Credentials issue. Obtaining Other Security Updates: Updates for other security issues are available at the following locations: • Security updates are available in the Microsoft Download Center. You can find them most easily by doing a keyword search for "security_patch." • Updates for consumer platforms are available at the Windows Update Web site. Support: • Customers in the U.S. and Canada can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. • International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site. Security Resources: • The Microsoft TechNet Security Web site provides additional information about security in Microsoft products. • Microsoft Software Update Services • Microsoft Baseline Security Analyzer (MBSA) • Windows Update • Windows Update Catalog: For more information about the Windows Update Catalog, see Microsoft Knowledge Base Article 323166. • Office Update Software Update Services: By using Microsoft Software Update Services (SUS), administrators can quickly and reliably deploy the latest critical updates and security updates to Windows 2000 and Windows Server 2003-based servers, and to desktop systems that are running Windows 2000 Professional or Windows XP Professional. For more information about how to deploy this security update by using Software Update Services, visit the Software Update Services Web site. Systems Management Server: Microsoft Systems Management Server (SMS) delivers a highly-configurable enterprise solution for managing updates. By using SMS, administrators can identify Windows-based systems that require security updates and can perform controlled deployment of these updates throughout the enterprise with minimal disruption to end users. For more information about how administrators can use SMS 2003 to deploy security updates, visit the SMS 2003 Security Patch Management Web site. SMS 2.0 users can also use Software Updates Service Feature Pack to help deploy security updates. For information about SMS, visit the SMS Web site. Note SMS uses the Microsoft Baseline Security Analyze, Microsoft Office Detection Tool, and the Enterprise Update Scanning Tool to provide broad support for security bulletin update detection and deployment. Some software updates may not be detected by these tools. Administrators can use the inventory capabilities of the SMS in these cases to target updates to specific systems. For more information about this procedure, visit the following Web site. Some security updates require administrative rights following a restart of the system. Administrators can use the Elevated Rights Deployment Tool (available in the SMS 2003 Administration Feature Pack and in the SMS 2.0 Administration Feature Pack) to install these updates. 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 (June 14, 2005): Bulletin published [***** End Microsoft Security Bulletin MS05-034 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Microsoft 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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