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CiscoWorks Application Vulnerabilities

Advisory ID: cisco-sa-20030813-cmf

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20030813-cmf

Revision 1.1

For Public Release 2003 August 13 15:00  UTC (GMT)


Summary

CiscoWorks Common Management Foundation (CMF), also packaged as part of CiscoWorks CD One, provides an application infrastructure foundation, allowing all CiscoWorks applications to share a common model for data storage, login, user role definitions, access privileges, and security protocols, as well as for navigation and launch management.

Two vulnerabilities exist in CiscoWorks CMF versions prior to and including 2.1. The first vulnerability is a privilege escalation vulnerability where a guest user may obtain administrative privileges within the application via a specially crafted URL. The second vulnerability is an ability to run arbitrary commands on the CiscoWorks server due to an error in processing user input.

Cisco is making patches available for CMF versions 2.0 and 2.1, free of charge, to correct the problem.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20030813-cmf.

Affected Products

Vulnerable Products

The following products are affected:

  • All versions of CiscoWorks CD One (1st through 5th editions)
  • Resource Manager Essentials (RME) versions 2.0, 2.1, and 2.2
  • Cisco Resource Manager (CRM) versions 1.0 and 1.1

CiscoWorks CD One is included as the base for all CiscoWorks management solutions, such as the LAN Management Solution, Routed WAN Management Solution, Small Network Management Solution, and VPN/Security Management Solution.

To determine the version of the Common Management Foundation which is installed, navigate through the menus within CiscoWorks starting with the tab on the left titled "Server Configuration" and locate the screen titled "Applications and Versions" under the folder named "About the Server". Look for the entry in the table labeled "Common Management Foundation" and the corresponding version.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by these vulnerabilities.

Details

The first vulnerability allows a non-privileged user of the CiscoWorks application, including the guest account if enabled, to send a specially crafted URL to the CiscoWorks server to acquire administrative privileges without authentication. Cisco Bug ID CSCdy33916 describes this vulnerability.

The second vulnerability permits an authenticated user of the CiscoWorks application to run arbitrary commands on the CiscoWorks server as "casuser", the username under which the application runs. Cisco Bug ID CSCea15281 describes this vulnerability.

Vulnerability Scoring Details

Cisco has not provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS).  At the time of original publication, CVSS scoring in Cisco security publications was not yet adopted.

Impact

  • CSCdy33916— The guest user or a normal user is capable, with a specifically crafted URL, of obtaining administrative privileges within the application allowing the user to perform tasks which it might otherwise not be allowed to do. Examples of such tasks might be approval of scheduled changes, such as software upgrades, adding and removing devices, adding, removing, and modifying accounts with the server, and viewing device configurations stored in the local archive.
  • CSCea15281—A normal user is capable, with a specifically crafted URL, of running commands remotely on the CiscoWorks server to perform tasks which they may otherwise not have access to do. Examples of such tasks might be viewing device configurations stored in the local archive.

Software Versions and Fixes

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.

Both vulnerabilities have been resolved in CiscoWorks Common Services 2.2.

Patches for CMF versions 2.0 and 2.1 are available from the Software Center on Cisco's worldwide website.

Workarounds

  • CSCdy33916— The guest user account may be disabled, limiting the exposure to only the trusted users of the CiscoWorks server. However, a software upgrade or patch is required to completely resolve the vulnerability.
  • CSCea15281—There is no workaround. A software upgrade or patch is required.

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerabilities. 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/en/US/docs/general/warranty/English/EU1KEN_.html , or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml .

Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades

Customers with Service Contracts

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 using Third Party Support Organizations

Customers whose Cisco products are provided or maintained through prior or existing agreements 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 without Service Contracts

Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire 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

Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.

Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages.

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any malicious use of the vulnerability described in this advisory.

The vulnerabilities described in this advisory were both originally found by internal testing. Prior to disclosure, the bug described by CSCdy33916 was also reported by Omicron from Portcullis Computer Security Ltd. Their report can be found at http://archives.neohapsis.com/archives/bugtraq/2003-08/0130.html

Status of this Notice: Final

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.


Distribution

This advisory is posted on Cisco's worldwide website at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20030813-cmf

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
  • first-teams@first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • full-disclosure@lists.grok.org.uk
  • comp.dcom.sys.cisco@newsgate.cisco.com

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 1.0

2003-August-13

Initial Public Release

Revision 1.1

2003-August-29

Added link for patch download; changed status to FINAL.

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/web/about/security/psirt/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.