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Cisco Security Advisory: Vulnerabilities in Unified Contact Center Express Administration Pages

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Cisco Security Advisory: Vulnerabilities in Unified Contact Center
Express Administration Pages

Advisory ID: cisco-sa-20090715-uccx

http://www.cisco.com/warp/public/707/cisco-sa-20090715-uccx.shtml

Revision 1.0

For Public Release 2009 July 15 1600 UTC (GMT)

Summary
=======

Cisco Unified Contact Center Express (Cisco Unified CCX) server contains
both a directory traversal vulnerability and a script injection
vulnerability in the administration pages of the Customer Response
Solutions (CRS) and Cisco Unified IP Interactive Voice Response (Cisco
Unified IP IVR) products. Exploitation of these vulnerabilities could
result in a denial of service condition, information disclosure, or a
privilege escalation attack.

Cisco has released free software updates that address these two
vulnerabilities in the latest version of Cisco Unified CCX software.

This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20090715-uccx.shtml.

Affected Products
=================

The Cisco Unified Contact Center Express (Cisco Unified CCX) is
a single-server, integrated "contact center in a box" for use in
deployments with up to 300 agents.

Vulnerable Products
+------------------

All versions of Cisco Unified CCX server running the following software
may be affected by these vulnerabilities, to include:

  * Cisco Customer Response Solution (CRS) versions 3.x, 4.x, 5.x,
    6.x, and 7.x
  * Cisco Unified IP Interactive Voice Response (Cisco Unified IP
    IVR) versions 3.x, 4.x, 5.x, 6.x, and 7.x
  * Cisco Unified CCX 4.x, 5.x, 6.x, and 7.x
  * Cisco Unified IP Contact Center Express versions 3.x, 5.x, 6.x,
    and 7.x
  * Cisco Customer Response Applications versions 3.x
  * Cisco IP Queue Manager (IP QM) versions 3.x

Products Confirmed Not Vulnerable
+--------------------------------

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

Details
=======

Cisco Unified Contact Center Express (Cisco Unified CCX) servers may
be affected by both a directory traversal vulnerability and a script
injection vulnerability.

The directory traversal vulnerability may allow authenticated users to
view, modify, or delete any file on the server through the Customer
Response Solutions (CRS) Administration interface. This vulnerability
is documented in Cisco Bug ID CSCsw76644 and has been assigned Common
Vulnerability and Exposures (CVE) ID CVE-2009-2047.

The script injection vulnerability may allow authenticated users to
enter JavaScript into the Cisco Unified CCX database. The stored script
could be executed in the browser of the next authenticated user. This
vulnerability is documented in Cisco Bug ID CSCsw76649 and has been
assigned CVE ID CVE-2009-2048.

Vulnerability Scoring Details
=============================

Cisco has provided scores for the vulnerabilities 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.

* Incomplete input validation allows modification of OS
files/directories (CSCsw76644)

CVSS Base Score - 9.0
    Access Vector -            Network
    Access Complexity -        Low
    Authentication -           Single
    Confidentiality Impact -   Complete
    Integrity Impact -         Complete
    Availability Impact -      Complete

CVSS Temporal Score - 8.7
    Exploitability -           Functional
    Remediation Level -        Official-Fix
    Report Confidence -        Confirmed

* script injection vulnerability in admin interface pages (CSCsw76649)

CVSS Base Score - 5.5
    Access Vector -            Network
    Access Complexity -        Low
    Authentication -           Single
    Confidentiality Impact -   None
    Integrity Impact -         Partial
    Availability Impact -      Partial

CVSS Temporal Score - 4.5
    Exploitability -           Functional
    Remediation Level -        Official-Fix
    Report Confidence -        Confirmed


Impact
======

Successful exploitation of the directory traversal vulnerability may
result in read and write access to files on the underlying operating
system.

Successful exploitation of the script injection vulnerability may result
in the execution of JavaScript of authenticated users and prevent server
pages from displaying properly.

Software Versions and Fixes
===========================

The fixes for these vulnerabilities are included in CRS version
7.0(1)SR2 and are available as a hotfix for customers running versions
5.x and 6.x. The hotfixes are crs5.0.2sr2es09 and crs6.0.1sr1es05.

The latest version of Cisco Unified Contact Center Express is
available at the following link:

http://tools.cisco.com/support/downloads/go/ImageList.x?relVer=7.0%281%29_SR2&mdfid=270569179&sftType=Cisco+Customer+Response+Solution+Software+Releases&optPlat=&nodecount=11&edesignator=null&modelName=Cisco+Unified+Contact+Center+Express&treeMdfId=2788752.

Information about how to obtain the hotfixes can be found in the release
notes enclosures of the bugs at: CSCsw76644 and CSCsw76649.

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 these vulnerabilities.

The script injection attacks that are described in this advisory are
a specific classification of stored cross-site scripting attacks. A
description and mitigation technique can be found in the applied
mitigation bulletin available at the following link:

http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a008073f7b3.html

These vulnerabilities can be detected and mitigated with IDS signatures
3216-0 and 19001-0.

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@xxxxxxxxx or security-alert@xxxxxxxxx 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@xxxxxxxxx

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 vulnerabilities described in this advisory.

These vulnerabilities were reported to Cisco by National Australia
Bank's Security Assurance team.

Cisco would like to thank the National Australia Bank's Security
Assurance team for the discovery and reporting of these vulnerabilities.

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://www.cisco.com/warp/public/707/cisco-sa-20090715-uccx.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.

  * cust-security-announce@xxxxxxxxx
  * first-bulletins@xxxxxxxxxxxxxxx
  * bugtraq@xxxxxxxxxxxxxxxxx
  * vulnwatch@xxxxxxxxxxxxx
  * cisco@xxxxxxxxxxxxxxxxx
  * cisco-nsp@xxxxxxxxxxxxxxx
  * full-disclosure@xxxxxxxxxxxxxxxxx
  * comp.dcom.sys.cisco@xxxxxxxxxxxxxxxxxx

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  | 2009-July-15  | 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/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.

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Copyright 2008-2009 Cisco Systems, Inc. All rights reserved.
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Updated: Jul 15, 2009                             Document ID: 110307
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