Table Of Contents
Release Notes for Cisco BBSM 5.1 ASN.1 Security Fix, Patch 5308
These release notes describe the Microsoft Abstract Syntax Notation 1 (ASN.1) security vulnerability patch (MS04-007) and its installation. This patch (MS04-007SecurityPatch-5.1.exe) is also known as Patch 5308. This patch eliminates a buffer overrun security vulnerability on the Cisco Building Broadband Service Manager (BBSM) 5.1 server. Patch 5308 is dependent on BBSM MSFix1 (Patch 1061).
Note The most current Cisco documentation for released products is available on Cisco Connection Online (CCO) at http://www.cisco.com. Online documents may contain updates and modifications made after the paper documents are printed.
A Microsoft security vulnerability exists because of an unchecked buffer in the Microsoft ASN.1 Library. Attackers could exploit this vulnerability and cause a buffer overrun to occur, allowing them to gain control and execute code with system privileges on an affected system. This patch prevents an attacker from exploiting this vulnerability.
For additional information, refer to this Microsoft website:
BBSM service packs and patches can be installed locally onto any BBSM server with Internet access, or they can be installed remotely onto multiple BBSM servers from another computer.
Caution We recommend terminating all client sessions during BBSM service pack and patch upgrades and installations. For additional information, refer to the Cisco BBSM 5.1 Software Configuration Guide.
Follow these steps to install this patch onto your BBSM 5.1 server:
Step 1 Using the Internet Explorer (IE) web browser, go to the Cisco BBSM 5.1 Software Download website:
Note Because of some known issues and incompatibilities with Netscape Navigator, you must use the IE browser when using WEBpatch.
Step 2 Download MS04-007SecurityPatch-5.1.exe to a temporary location on your computer.
•For a local BBSM installation, go to Step 6.
•For a remote BBSM installation, continue with Step 3.
Note If you are using the Windows 2000 (SP2 or later) or Windows XP operating systems to install this patch remotely, the WEBpatch web pages load very slowly. To prevent this problem, uncheck the Client for Microsoft Networks check box in the NIC Properties window on your remote computer.
Step 3 In the IE browser field, enter http://<address>:9488/www where <address> is either the external NIC address of the BBSM server (if you are accessing it externally) or the internal IP address of the BBSM server (if you are accessing it from within the BBSM subnet).
For example, enter http://10.10.1.2:9488/www, and press Enter. The Enter Network Password window appears. (See Figure 1.)
Figure 1 Enter Network Password Window
Step 4 Enter your username and password. (Do not enter any information in the Domain field.)
Note You must have administrator privileges to use WEBpatch.
Step 5 Click OK. The remote BBSM Dashboard appears.
Step 6 From the BBSM Dashboard, use the WEBpatch utility to install this patch.
Note Refer to the Cisco BBSM 5.1 Software Configuration Guide for instructions on transferring and installing BBSM patches and service packs. This patch automatically reboots the BBSM server.
Do not refer to the patch logs to verify that Patch 5308 installed correctly. The patch logs for Patch 5308 do not show the InstallPatch completed and Reboot successful logs. To verify that Patch 5308 (MS04-007) is installed, verify that the c:\WINNT\system32\msasn1.dll file is dated 19-Sep-2003 and its version number is 5.0.2195.6823.
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
The following documents provide information about BBSM:
•Cisco BBSM 5.1 and BBSD Installation Guide (order number DOC-7812741=)
•Cisco BBSM 5.1 Software Configuration Guide (available on Cisco.com)
•Release Notes for the Cisco BBSM 5.1 (available on Cisco.com)
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Obtaining Technical Assistance
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This document is to be used in conjunction with the documents listed in the Related Documentation section.
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