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Cisco Security Advisory

Cisco TelePresence System Default Credentials Vulnerability

Advisory ID: cisco-sa-20130807-tp

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130807-tp

Revision 1.2

Last Updated  2013 August 9 16:30  UTC (GMT)

For Public Release 2013 August 7 16:00  UTC (GMT)

Related Resources:

View related Alert

Summary

A vulnerability in Cisco TelePresence System could allow a remote attacker to access the web server via a user account that is created with default credentials.

The vulnerability is due to a default user account being created at installation time. An attacker could exploit this vulnerability by remotely accessing the web server and using the default account credentials. An exploit could allow the attacker to log in with the default credentials, which gives them full administrative rights to the system.

Workarounds that mitigate this vulnerability are available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130807-tp

Affected Products


Vulnerable Products

Cisco TelePresence System Series 500-37, 1300, 1X00, 3X00, and 30X0 running CiscoTelePresence System Software Releases 1.8.1 through 1.10.1 are affected by this vulnerability. Cisco TelePresence Series TX 1310, TX 9X00, and CTS 500-32 running Cisco TelePresence System Software Releases 6.0.3 and prior are affected by this vulnerability.

Products Confirmed Not Vulnerable

Cisco TelePresence Multipoint Switch (CTMS), Cisco TelePresence Recording Server (CTRS), and Cisco TelePresence Manager (CTSMan) are not affected by this vulnerability.
No other Cisco products are currently known to be affected by this vulnerability.

Details

The Cisco TelePresence solution allows an immersive, in-person communication and collaboration over the network with colleagues, prospects, and partners, even when they are located in opposite hemispheres.

Cisco TelePresence System Software includes a password recovery administrator account that is enabled by default. Successful exploitation of this vulnerability could allow a remote attacker to use these default credentials to modify the system configuration and settings and take full control of the affected system. An attacker could use this account to modify the system configuration and settings via an HTTPS session.

This vulnerability is documented in Cisco Bug ID CSCui43128 (registered customers only), and has been assigned the CVE identifier CVE-2013-3454.

Vulnerability Scoring Details

Cisco has scored the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0.

CVSS is a standards-based scoring method that conveys vulnerability severity and helps organizations determine the urgency and priority of a response.

Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks.

Cisco has provided additional information regarding CVSS at the following link:

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html

Cisco has also provided a CVSS calculator to compute the environmental impact for individual networks at the following link:

http://intellishield.cisco.com/security/alertmanager/cvss



CSCui43128 - Cisco TelePresence System Default Credentials Vulnerability

Calculate the environmental score of CSCui43128

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 9.5

Exploitability

Remediation Level

Report Confidence

High

Workaround

Confirmed


Impact

Successful exploitation of this vulnerability could allow a remote attacker to use the default credentials for the password recovery account to modify the system configuration and settings and take full control of the affected system.

Software Versions and Fixes

This vulnerability is fixed in CiscoTelePresence System Software Releases version 1.10.2 and above for Cisco TelePresence System Series 500-37, 1300, 1X00, 3X00, and 30X0.
Fixed Releases of Cisco TelePresence Series TX 9X00, TX 1300, and CTS 500-32 running Cisco TelePresence System Software 6.x will be available at a later date.

When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.


Workarounds

Workarounds exist to mitigate this vulnerability. 

For customers using Cisco TelePresence codecs registered with Cisco Unified Communications Manager (Unified CM), the following workaround exists:

1. Proceed to Cisco Unified CM Administration and select Device > Phone, search and select the configured Cisco TelePresence unit.
2. Under the Secure Shell Information (ssh), change the ssh helpdesk user name from the default helpdesk to pwrecovery, and then choose an alternate password.

This will overwrite the pwrecovery account stored on the Cisco TelePresence unit, and permit changing the password from the default to one created by the Cisco Unfied CM administrator.
 
Note: Password recovery will continue to function through ssh as designed, but the user is required to have physical access to the Cisco TelePresence unit in order to execute a recovery. The ssh access will have to use the updated password information for the pwrecovery account.
 
3. Reboot the Cisco TelePresence codec to download the updated Cisco Unified CM configuration.
 
This workaround is persistent because the codec downloads the configuration after every reboot.  

 As a result, the GUI access would require a user to know either the administrator or newly configured pwrecovery credentials as configured in Cisco Unified CM. Default pwrecovery credentials will cease to function.

For customers with non-Cisco Unified CM registered Cisco TelePresence codecs, the workaround requires manual intervention on the affected system. Please contact the Cisco Technical Assistance Center (TAC) for instructions on how to implement this workaround. 

Obtaining Fixed Software

Cisco will make available fixed software at a later date. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.

Customers may only install and expect support for feature sets they have purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html.

Customers with Service Contracts

Customers with contracts should obtain upgraded software through their regular update channels. For most customers, upgrades should be obtained through the Software Navigator on Cisco.com at http://www.cisco.com/cisco/software/navigator.html.

Customers Using Third-Party Support Organizations

Customers with Cisco products that 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 organization for assistance with the appropriate course of action.

The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.

Customers Without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC):

  • +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 the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Customers without service contracts should request free upgrades through the TAC.

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

Exploitation and Public Announcements

Potential exploitation was reported directly to Cisco by a single customer. The PSIRT is not aware of any widespread exploitation or public announcements of this vulnerability.

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 Security Intelligence Operations at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130807-tp

Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses:

  • cust-security-announce@cisco.com
  • first-bulletins@lists.first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • full-disclosure@lists.grok.org.uk

Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates.


Revision History

Revision 1.2 2013-August-09 Changes to "Vulnerable Products" and "Software Versions and Fixes" sections
Revision 1.1 2013-August-07 Change to CVSSv2 scoring
Revision 1.0 2013-August-07 Initial public release

Cisco Security Procedures

Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco is available on Cisco.com at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This web page includes instructions for press inquiries regarding Cisco Security Advisories. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt.


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