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
Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control Server Solution Engine (ACS Solution Engine) provide authentication, authorization, and accounting (AAA) services to network devices such as a network access server, Cisco PIX and a router. This advisory documents multiple Denial of Service (DoS) and authentication related vulnerabilities for the ACS Windows and the ACS Solution Engine servers.
The vulnerabilities are documented as these Cisco bug IDs:
This advisory will be posted at http://www.cisco.com/warp/public/707/cisco-sa-20040825-acs.shtml.
This section provides details on affected products.
These products are vulnerable:
CSCed81716 is only applicable to the ACS Solution Engine.
Successfully authenticate to your ACS box to determine your software revision. After you perform the authentication, the first screen displays the current ACS version in this format—CiscoSecure ACS Release 3.2(3) Build 11.
ACS versions may also be displayed as 003.002(003.011), where "011" is the build number referenced on the ACS graphical user interface (GUI).
Cisco Secure ACS for UNIX is not affected by these vulnerabilities. No other Cisco products are currently known to be affected by these vulnerabilities.
The Cisco Secure ACS products provide a centralized identity networking solution and simplified user management experience across all Cisco devices and security management applications. The products help to ensure enforcement of assigned policies—they allow network administrators to control who can log into the network, per user privileges in the network, security auditing and billing information, and command level access controls.
This section describes the impact of these vulnerabilities.
When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center ("TAC") or your contracted maintenance provider for assistance.
|
DDTs Bug ID |
Impacted Versions |
Fixed Versions |
Platform |
|---|---|---|---|
|
CSCeb60017 ( registered customers only) |
3.2(1), 3.2(2) |
003.002(002.020) or later, 3.2(3) in Product Upgrade Tool |
ACS Windows and ACS Solution Engine |
|
CSCec66913 ( registered customers only) |
3.2(1), 3.2(2) |
003.002(002.020) or later, 3.2(3) in Product Upgrade Tool |
ACS Windows and ACS Solution Engine |
|
CSCec90317 ( registered customers only) |
3.2(1) |
003.002(002.005) or later, 3.2(2) in Product Upgrade Tool |
ACS Windows and ACS Solution Engine |
|
CSCed81716 ( registered customers only) |
3.2(1), 3.2(2) |
003.002(003.011) or later, 3.2(3) in Product Upgrade Tool |
ACS Solution Engine only |
|
CSCef05950 ( registered customers only) |
3.0(x), 3.1(x), 3.2(x), 3.3(1) |
There are patches available to address this vulnerability for versions 3.1(2), 3.2(3) and 3.3(1). See the Customers with Service Contracts section below for details on the location of these patches. Although version 3.0 is affected, the fix is only available with a feature set included in versions 3.1 and higher. Customers without Service Contracts will need to contact Cisco Technical Assistance Center at the numbers listed below for assistance. |
ACS Windows and ACS Solution Engine |
Upgrade procedures can be found as indicated:
This section describes workarounds for these vulnerabilities.
Refer to http://www.cisco.com/univercd/cc/td/doc/product/access/acs_soft/csacs4nt/acs32/user02/a.htm#wp89030 for information on how to set up an access policy on the Cisco ACS.
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 public announcements or malicious use of the vulnerability described in this advisory.
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-20040825-acs.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.
|
Revision 1.3 |
2007-August-14 |
Fixed link. |
|
Revision 1.2 |
2004-October-05 |
Clarified impact of Denial of Service vulnerabilities in the Impact section. Added the Impacted Versions column and added content to the Fixed Versions column in the Software Versions and Fixes section table. Clarified version 3.0(x) status in the Software Versions and Fixes section. |
|
Revision 1.1 |
2004-August-25 |
Changed URLs in the Obtaining Fixed Software section. |
|
Revision 1.0 |
2004-August-25 |
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.
All contents are Copyright © 2006-2007 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
| Updated: Aug 14, 2007 | Document ID: 61603 |