Products & Services
Support

Product Categories


Popular Downloads


Manage Software

How to Buy

For Home

Linksys Products Store
Linksys is now part of Belkin
Products for everyone

All Ordering Options

Training & Events Partners
Guest

Cisco Security Advisory

Cisco Unified Contact Center Express Directory Traversal Vulnerability

Advisory ID: cisco-sa-20111026-uccx

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-uccx

Revision 1.0

For Public Release 2011 October 26 16:00  UTC (GMT)


Summary

Cisco Unified Contact Center Express (UCCX or Unified CCX) and Cisco Unified IP Interactive Voice Response (Unified IP-IVR) contain a directory traversal vulnerability that may allow a remote, unauthenticated attacker to retrieve arbitrary files from the filesystem.

Cisco has released free software updates that address this vulnerability.  

There are no workarounds that mitigate this vulnerability.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-uccx.

Cisco Unified Communications Manager is also affected by this vulnerability and a separate advisory has been published at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-cucm.

Note:
 Effective October 18, 2011, Cisco moved the current list of Cisco Security Advisories and Responses published by Cisco PSIRT. The new location is http://tools.cisco.com/security/center/publicationListing. You can also navigate to this page from the Cisco Products and Services menu of the Cisco Security Intelligence Operations (SIO) Portal. Following this transition, new Cisco Security Advisories and Responses will be published to the new location. Although the URL has changed, the content of security documents and the vulnerability policy are not impacted. Cisco will continue to disclose security vulnerabilities in accordance with the published Security Vulnerability Policy.

 

Affected Products

Vulnerable Products

The following Cisco UCCX versions are vulnerable:

  • Cisco UCCX version 6.0(x)
  • Cisco UCCX version 7.0(x)
  • Cisco UCCX version 8.0(x)
  • Cisco UCCX version 8.5(x)

Note: Cisco UCCX versions prior to 6.0(x) reached end of software maintenance. Customers running versions prior to 6.0(x) should contact their Cisco support team for assistance in upgrading to a supported version of Cisco UCCX.

The following Cisco Unified IP Interactive Voice Response versions are vulnerable:

  • Cisco Unified IP Interactive Voice Response version 6.0(x)
  • Cisco Unified IP Interactive Voice Response version 7.0(x)
  • Cisco Unified IP Interactive Voice Response version 8.0(x)
  • Cisco Unified IP Interactive Voice Response version 8.5(x)
Note: Cisco Unified IP Interactive Voice Response versions prior to 6.0(x) reached end of software maintenance. Customers running versions prior to 6.0(x) should contact their Cisco support team for assistance in upgrading to a supported version of Cisco Unified IP Interactive Voice Response.

Products Confirmed Not Vulnerable

With the exception of Cisco Unified Communications Manager, no other Cisco products are currently known to be affected by this vulnerability.

Details

The Cisco Unified Contact Center Express is a single/two node server, integrated "contact center in a box" for use in deployments with up to 300 agents until software version 8.0(x) and 400 agents starting at version 8.5(x).

The Cisco Unified Interactive Voice Response is a UCCX product package that provides IP call queuing and IP intelligent voice response functionality for contact centers.

Cisco Unified Communications Manager and Cisco Unified Contact Center Express Directory Traversal Vulnerability
Cisco Unified Communications Manager, Cisco Unified Contact Center Express and Cisco Unified IP Interactive Voice Response contain a directory traversal vulnerability that may allow an unauthenticated, remote attacker to retrieve arbitrary files from the filesystem.


The vulnerability is due to improper input validation, and could allow the attacker to traverse the filesystem directory. An attacker could exploit this vulnerability by sending a specially crafted URL to the affected system.

The vulnerability in Cisco Unified Contact Center Express and Cisco Unified IP Interactive Voice Response could be exploited over TCP port 8080 in 6.0(x) and 7.0(x) versions and TCP port 9080 starting in 8.0(x) version of the product.

Note: In Cisco Unified Contact Center Express and Cisco Unified IP Interactive Voice Response versions 6.0(x) and 7.0(x), port 8080 could be reconfigured on the server.

This advisory addresses the vulnerability in Cisco Unified Contact Center Express and Cisco Unified IP Interactive Voice Response, which is documented in Cisco bug ID CSCts44049, (registered customers only) and has been assigned CVE ID CVE-2011-3315.

Vulnerability Scoring Details

Cisco has provided scores for the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0.

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

Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.

Cisco has provided an FAQ to answer additional questions regarding CVSS at
 http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html.

Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at
 http://intellishield.cisco.com/security/alertmanager/cvss.



CSCts44049, UCCX vulnerable to directory traversal

Calculate the environmental score of CSCts44049,

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

None

None

CVSS Temporal Score - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Successful exploitation of the vulnerability may allow a remote, unauthenticated attacker to retrieve arbitrary files from the Cisco Unified Contact Center Express or Cisco Unified IP Interactive Voice Response filesystem.

Software Versions and Fixes

Cisco has released free software updates that address this vulnerability.

The following table contains the remediation for each affected version of Cisco Unified Contact Center Express and Cisco Unified IP Interactive Voice Response:

Version First Fixed in
6.0(x) 6.0(1)SR1ES8
7.0(x) 7.0(2)ES1
8.0(x) 8.0(2)SU3 and patch ciscouccx.802SU3_CSCts44049.cop.sgn
8.5(x) 8.5(1)SU2

Releases 6.0(1)SR1ES8 and 7.0(2)ES1 will not be posted on cisco.com. Customers should contact Cisco Technical Assistance Center (TAC) for assistance.

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.


Workarounds

There are no workarounds for this vulnerability. Mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this advisory: http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20111026-cucm-uccx.

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerability. 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 public announcements or malicious use of the vulnerability described in this advisory.

This vulnerability was reported to Cisco by the Vulnerability Research Team of Digital Defense, Inc.

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-20111026-uccx

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

2011-October-26

Initial public release


 

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.


Download this document (PDF)
View Printable Version