Summary
Affected Products
Details
Impact
Software Versions and Fixes
Workarounds
Obtaining Fixed Software
Exploitation and Public Announcements
Status of This Notice: FINAL
Distribution
Revision History
Cisco Security Procedures
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.mspx
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.
This section provides details on 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.
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.mspx
This list is not all inclusive. Please refer to Microsoft's bulletin if you think you have an affected Microsoft platform.
No other Cisco products are currently known to be affected by these vulnerabilities.
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.mspx
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.mspx
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://www.cisco.com/en/US/docs/net_mgmt/cisco_building_broadband_service_manager/5.3/operations/guide/ops53_05.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
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.mspx
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.
Cisco has made free software available to address this vulnerability for affected customers. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.
Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/public/sw-license-agreement.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software upgrades.
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 guidance and assistance with the appropriate course of action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on specific customer situations such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed.
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.
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.
Refer to 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.
The Cisco PSIRT is not aware of any active exploitation of this vulnerability.
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
This advisory will be posted on Cisco's worldwide website at http://www.cisco.com/warp/public/707/cisco-sa-20040129-ms03-049.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.
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.
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Revision 1.0 |
2004-January-29 |
Initial public release. |
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/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.
| Updated: Jan 29, 2004 | Document ID: 48161 |