-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Buffer Overrun in Microsoft Windows 2000 Workstation Service (MS03-049) Revision 1.0 - FINAL For Public Release 2004 January 29 18:00 UTC (GMT) - ----------------------------------------------------------------------- Contents ======== Summary Affected Products Details Impact Software Versions and Fixes Obtaining Fixed Software Workarounds Exploitation and Public Announcements Status of This Notice: FINAL Distribution Revision History Cisco Security Procedures - ----------------------------------------------------------------------- Summary ======= This advisory describes a vulnerability that affects Cisco products and applications running on Microsoft Windows 2000. A vulnerability has been discovered that enables an attacker to execute arbitrary code or perform a denial of service (DoS) against the server. These vulnerabilities were discovered and publicly announced by Microsoft in their Microsoft Security Bulletin MS03-049. More information about the vulnerability can be found at the following URL: http://www.microsoft.com/technet/security/bulletin/MS03-049.asp All Cisco products and applications that are using unpatched Microsoft Windows 2000 are vulnerable. This advisory is available at: http://www.cisco.com/warp/public/707/cisco-sa-20040129-ms03-049.shtml Affected Products ================= To determine if a product is vulnerable, review the list below. If the software versions or configuration information are provided, then only those combinations are vulnerable. This is a list of appliance software which needs patches downloaded from Cisco. * Cisco CallManager * Cisco Building Broadband Service Manager (BBSM) + BBSM Version 5.2 + HotSpot 1.0 * Cisco Customer Response Application Server (CRA) * Cisco Personal Assistant (PA) * Cisco Conference Connection (CCC) * Cisco Emergency Responder (CER) * Cisco IP Call Center Express (IPCC Express) * Cisco Internet Service Node (ISN) Other Cisco products which run on a Microsoft based operating system should strongly consider loading the patch from Microsoft at the following URL: http://www.microsoft.com/technet/security/bulletin/MS03-049.asp This list is not all inclusive. Please refer to Microsoft's bulletin if you think you have an affected Microsoft platform. * Cisco Unity * Cisco Building Broadband Service Manager (BBSM) versions 5.1 and prior * Cisco uOne Enterprise Edition * Cisco Latitude products * Cisco Network Registrar (CNR) * Cisco Internet Service Node (ISN) * Cisco Intelligent Contact Manager (ICM) (Hosted and Enterprise) * Cisco IP Contact Center (IPCC) (Express and Enterprise) * Cisco E-mail Manager (CEM) * Cisco Collaboration Server (CCS) * Cisco Dynamic Content Adapter (DCA) * Cisco Media Blender (CMB) * TrailHead (Part of the Web Gateway solution) * Cisco Networking Services for Active Directory (CNS/AD) * Cisco SN 5400 Series Storage Routers (driver to interface to Windows server) * CiscoWorks + CiscoWorks VPN/Security Management Solution (CWVMS) + User Registration Tool + Lan Management Solution + Routed WAN Management + Service Management + VPN/Security Management Solution + IP Telephony Environment Monitor + Small Network Management Solution + QoS Policy Manager + Voice Manager * Cisco Transport Manager (CTM) * Cisco Broadband Troubleshooter (CBT) * DOCSIS CPE Configurator * Cisco Secure Applications + Cisco Secure Scanner + Cisco Secure Policy Manager (CSPM) + Access Control Server (ACS) * Videoconferencing Applications + IP/VC 3540 Video Rate Matching Module + IP/VC 3540 Application Server * Cisco IP/TV Server Details ======= Default installations of Microsoft Windows 2000 Server automatically enable the Workstation service. This vulnerability is not isolated to Microsoft Windows 2000 Workstation edition. The Microsoft Windows 2000 Workstation service is vulnerable to buffer overflows and denial of service (DoS) attacks. This vulnerability can be exploited to execute arbitrary code on a computer system or to disrupt normal operation of the server. The vulnerability has been described in more detail at the following URL: http://www.microsoft.com/technet/security/bulletin/MS03-049.asp Impact ====== According to Microsoft, an attacker could gain System privileges on an affected system, or could cause the Workstation service to fail. For a full list of symptoms and for the most up to date information, please see Microsoft's Bulletin at the following URL: http://www.microsoft.com/technet/security/bulletin/MS03-049.asp Software Versions and Fixes =========================== Affected Cisco IP Telephony Applications: for all versions of Cisco CallManager and all compatible versions of Cisco IP Interactive Voice Response (IP IVR), Cisco IP Call Center Express (IPCC Express), Cisco Personal Assistant (PA), Cisco Emergency Responder (CER), Cisco Conference Connection (CCC), and Cisco Internet Service Node (ISN). Customers should apply the win-OS-Upgrade-k9.2000-2-5sr4.exe or later package located at the following URL: http://www.cisco.com/pcgi-bin/tablebuild.pl/cmva-3des?psrtdcat20e2 Cisco Building Broadband Service Manager For BBSM Version 5.2, apply BBSM52SP2.exe found at the following URL: http://www.cisco.com/pcgi-bin/tablebuild.pl/bbsm52 Instructions for installing service patches on BBSM can be found at the following URL: http://cco.cisco.com/en/US/products/sw/netmgtsw/ps533/products_user_guide_chapter09186a00801da1bc.html Cisco HotSpot 1.0 For HotSpot1.0, apply Service Pack 1 available at the following URL: http://www.cisco.com/pcgi-bin/tablebuild.pl/bbsmhs10 Obtaining Fixed Software ======================== Where Cisco provides the operating system bundled with the product, Cisco is offering software upgrades free of charge to address these vulnerabilities for all affected customers. Customers may only install and expect support for the feature sets they have purchased. Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com. Customers whose Cisco products are provided or maintained through prior or existing agreement with third-party support organizations such as Cisco Partners, authorized resellers, or service providers should contact that support organization for assistance with the upgrade, which should be free of charge. Customers who purchase direct from Cisco but who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@cisco.com Please have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Please do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software upgrades. If you need assistance with the implementation of the workarounds, or have questions on the workarounds, please contact the Cisco Technical Assistance Center (TAC). * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@cisco.com See http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including special localized telephone numbers and instructions and e-mail addresses for use in various languages. Workarounds =========== Currently there are no known active worms exploiting this vulnerability. However, users can protect themselves from the potential infection by applying access control lists (ACLs). The Workstation service receives packets on UDP and TCP ports 138, 139 and 445. Restricting traffic to these ports may help mitigate the spread of any worm that exploits this vulnerability. Restricting traffic to these ports may also help prevent improper access, DoS, and other non-worm related exploitation. Please also reference the Microsoft posting for additional workarounds: http://www.microsoft.com/technet/security/bulletin/MS03-049.asp Customers who have firewalls, or have deployed Network Intrusion Detection Systems (NIDS) and/or Host Intrusion Detection Systems (HIDS) in their network may be able to use these devices to detect attempted exploitation or protect themselves from exploitation of this vulnerability. Customers with these products should refer to their product documentation from their vendor for information on how to properly configure these devices. Customers who have Cisco IDS devices installed in their network can find more information at the following URL: http://www.cisco.com/pcgi-bin/front.x/csec/csecHome.pl Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any active exploitation of this vulnerability. Status of This Notice: FINAL ============================ This is a final advisory. Although Cisco cannot guarantee the accuracy of all statements in this advisory, all of the facts have been checked to the best of our ability. Cisco does not anticipate issuing updated versions of this advisory. Should there be a significant, material change in the facts, Cisco may update this advisory. A stand-alone copy or paraphrase of the text of this security advisory that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory will be posted on Cisco's worldwide website at http://www.cisco.com/warp/public/707/cisco-sa-20040129-ms030-049.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce@cisco.com * bugtraq@securityfocus.com * full-disclosure@lists.netsys.com * vulnwatch@vulnwatch.org * first-teams@first.org (includes CERT/CC) * cisco@spot.colorado.edu * cisco-voip@puck.nether.net * comp.dcom.sys.cisco * Various internal Cisco mailing lists Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +----------------------------------------+ | Revision | | Initial | | 1.0 | 2004-January-29 | public | | | | release. | +----------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at: http://www.cisco.com/warp/public/707/sec_incident_response.shtml This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (SunOS) iD8DBQFAGXivezGozzK2tZARAhk7AKD6b14z4fwTE8SFtg1hztVLvJp0nwCgkGwA d0sYGIdzumtmlyWXaqUcqmw= =2WYM -----END PGP SIGNATURE-----