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Cisco - Microsoft IIS Vulnerabilities in Cisco Products - MS02-018 Revision 1.0 Public Release 2002 April 15 18:00 (UTC -0400) - ------------------------------------------------------------------------------- Contents Summary Affected Products Details Impact Software Versions and Fixes Obtaining Fixed Software Workarounds Exploitation and Public Announcements Status of This Notice Distribution Revision History Cisco Security Procedures - ------------------------------------------------------------------------------- Summary This advisory describes a vulnerability that affects Cisco products and applications that are installed on Microsoft operating systems incorporating the use of the Internet Information Server (IIS), and is based on the vulnerability of IIS, not due to a defect of the Cisco product or application. A number of vulnerabilities were discovered that enables an attacker to execute arbitrary code or perform a denial of service against the server. These vulnerabilities were discovered and publicly announced by Microsoft in their Microsoft Security Bulletin MS02-018. All Cisco products and applications that are using Microsoft IIS are considered vulnerable. This advisory is available at the http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.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. * Cisco CallManager 3.0, 3.1, 3.2 * Cisco ICS 7750 * Cisco Unity * Cisco Building Broadband Service Manager 4.x, 5.x * Cisco uOne Enterprise Edition * Cisco E-mail Manager (CEM) * Cisco Network Registrar (CNR) * Cisco Intelligent Contact Manager (ICM) Various Cisco Network Management products may be installed on Microsoft platforms that may be running a vulnerable version of IIS. Much older versions of CiscoWorks 2000 RWAN/CWSI Campus v2.x and Cisco Voice Manager v1.x are directly vulnerable because IIS was required as a part of the installation. Such systems might be offering HTTP services on default ports. These specific software packages are no longer supported, but are included in this notice to alert customers that might still be using them. No other Cisco product is known to be affected by this vulnerability. Details Implementations of the Microsoft Internet Information Server are vulnerable to buffer overflows and denial of service attacks. These vulnerabilities can be exploited to execute arbitrary code on a computer system or to disrupt normal operation of the server. The vulnerabilities have been described in more detail at http://www.microsoft.com/technet/security/bulletin/MS02-018.asp. Impact By gaining unauthorized access an attacker can view and modify any part of the operating system accessible with the privileges assigned to the web server user possibly leading to a breach of confidentiality and integrity of the system. By performing a denial of service attack, an attacker can cause a disruption in availability of the web server. Software Versions and Fixes Cisco CallManager +--------------------------------------------------+ | Version | Fixed Regular Release (available | | Affected | now) | | | Fix carries forward into all later | | | versions | |-----------+--------------------------------------| | Version | Install | | 3.0 | win-OS-Upgrade.2000-1-3spA.exe from | | | our Software Center | |-----------+--------------------------------------| | Version | Install | | 3.1 | win-OS-Upgrade.2000-1-3spA.exe from | | | our Software Center | |-----------+--------------------------------------| | Version | Install | | 3.2 | win-OS-Upgrade.2000-1-3spA.exe from | | | our Software Center | +--------------------------------------------------+ Cisco Unity +--------------------------------------------------+ | Version | Fixed Regular Release (available | | Affected | now) | | | Fix carries forward into all | | | later versions | |--------------+-----------------------------------| | All Versions | Install patch for MS02-018 | +--------------------------------------------------+ Cisco Building Broadband Service Manager +--------------------------------------------------+ | Version | Fixed Regular Release (available | | Affected | now) | | | Fix carries forward into all | | | later versions | |--------------+-----------------------------------| | Version 4.x | Install patch for MS02-018 | |--------------+-----------------------------------| | Version 5.x | Install patch for MS02-018 | +--------------------------------------------------+ Obtaining Fixed Software Cisco is offering free software upgrades to address this vulnerability for all affected customers. Customers may only install and expect support for the feature sets they have purchased. Customers with service contracts should contact their regular update channels to obtain any software release containing the feature sets they have purchased. For most customers with service contracts, this means that upgrades should be obtained through the Software Center on Cisco's Worldwide Web site at http://www.cisco.com. Customers whose Cisco products are provided or maintained through a 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 obtaining the free software upgrade (s). Customers who purchased directly 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 obtain fixed software by contacting the Cisco Technical Assistance Center (TAC) using the contact information listed below. In these cases, customers are entitled to obtain an upgrade to a later version of the same release or as indicated by the applicable row in the Software Versions and Fixes table (noted above). Cisco 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: [EMAIL PROTECTED] 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. Please have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Please do not contact either "[EMAIL PROTECTED]" or "[EMAIL PROTECTED]" for software upgrades. Workarounds Cisco is not aware of any available workarounds for these vulnerabilities and strongly suggests the application of the recommended patches. Exploitation and Public Announcements The Cisco PSIRT is not aware of any malicious use of the vulnerabilities described in this advisory. The vulnerabilities described here have been discussed publicly on mailing lists and via security advisories released by other sources. Status of This Notice: Interim This is an Interim advisory. Although Cisco cannot guarantee the accuracy of all statements in this notice, all of the facts have been checked to the best of our ability. Cisco does not anticipate issuing updated versions of this advisory unless there is some material change in the facts. Should here be a significant change in the facts, Cisco may update this advisory. Distribution This notice will be posted on Cisco's Worldwide Web site at http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.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: * [EMAIL PROTECTED] * [EMAIL PROTECTED] * [EMAIL PROTECTED] (includes CERT/CC) * [EMAIL PROTECTED] * comp.dcom.sys.cisco * [EMAIL PROTECTED] * Various internal Cisco mailing lists Revision History +-----------------------------------------------------+ | Revision | 2002 April 15 | Initial public | | 1.0 | 18:00 (UTC | release | | | -0400) | | +-----------------------------------------------------+ 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 Web site 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. - ------------------------------------------------------------------------------- This notice is Copyright 2002 by Cisco Systems, Inc. This notice may be redistributed freely after the release date given at the top of the text, provided that redistributed copies are complete and unmodified, and include all date and version information. - ------------------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: PGP 6.5.2 iQEVAwUBPLtN2g/VLJ+budTTAQEY+Af/WUVXxiXhg1hkiqf1Gdnmb9y8XqZyVt84 PuEBlSyV/E67QLfwoqeEFtlSTRuXCPVTfSrT6vN/mgEs2xZDeus2JhdHV7wLlNMh wKFReLu5Dzcb651CL0VdCunx/lNYRFrlycT9uZjE/VrmfyiG92kfQrCv+xGVC4iZ ggaY8vacqBfLAI3hRwf1KnhSj8pgDZHilb2sur+3EWA1+QBQ0eSaAc5l08BIqotT P0rM213oM4SjSGJl7O/DZfIefbQieekciXz8UOfPa0XRho5Tze8gTLMiTYMDBXkF iEG1BfPAJDIdw3vHsLZoyOf75B5yUnFN4pRLeyrmhacODYIsMq9eaQ== =tmKC -----END PGP SIGNATURE-----