Cisco Security Advisory: Cisco Unified Communications Web-based Management Vulnerability



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Cisco Security Advisory: Cisco Unified Communications Web-based
Management Vulnerability

Document ID: 97836

Advisory ID: cisco-sa-20071017-IPCC

http://www.cisco.com/warp/public/707/cisco-sa-20071017-IPCC.shtml

Revision 1.0

For Public Release 2007 October 17 1600 UTC (GMT)

- ---------------------------------------------------------------------

Summary
=======

Unified Contact Center and Intelligent Contact Management products
contain a vulnerability that may result in unauthorized access to the
web-based reporting and script monitoring tool (Web View) and the
web-based configuration tool (Web Admin).

This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20071017-IPCC.shtml.

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

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

The following products are affected by a vulnerability that may
result in unauthorized access to the web-based reporting and script
monitoring tool (Web View):

* Cisco Unified Intelligent Contact Management Enterprise (Unified
ICME)
* Cisco Unified ICM Hosted (Unified ICMH)
* Cisco Unified Contact Center Enterprise (UCCE)
* Cisco Unified Contact Center Hosted (UCCH)
* Cisco System Unified Contact Center Enterprise (SUCCE)

The following product is affected by a vulnerability that may result
in unauthorized access to the web-based configuration tool (Web
Admin).

* Cisco System Unified Contact Center Enterprise (SUCCE)

To determine the version of software installed on the Administration
Workstation (AW), navigate to the Add or Remove Programs window on
the Windows Server. If impacted, an entry for Cisco ICM Maintenance
Release ICM 7.1(5) will be observable in the list of installed
applications.

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

The following products are not affected by the vulnerability
described in this document:

* Cisco Unified Contact Center Express
* Cisco IP Contact Center Express

No other Cisco products are known to be affected by this
vulnerability.

Only the identified products running software version ICM 7.1(5) are
impacted by this vulnerability.

Details
=======

Cisco Unified ICME, Unified ICMH, UCCE, UCCH and SUCCE are a suite of
strategic platforms that enable customers to provide intelligent
routing and call treatment with blending of multiple communication
channels.

A vulnerability exists in software version 7.1(5) for Cisco Unified
ICME, Unified ICMH, UCCE, UCCH and SUCCE editions that may enable any
Windows Active Directory domain defined user to obtain unauthorized
privilege levels. This would provide Windows Active Directory users
the ability to view Web View report information for any call center
instance. Cisco SUCCE is also impacted by unauthorized access to the
Web Admin tool, which could result in the ability to change the
application configuration, including editing application rights.

This vulnerability is documented in Cisco Bug ID: CSCsj55686

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

Cisco is providing 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.

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

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

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?target=new&version=2.0&vector=AV:N/AC:L/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C

CSCsj55686 - AD users have privileges to log into Web View and Web Admin tools

CVSS Base Score - 9
Access Vector - Network
Access Complexity - Low
Authentication - Single
Confidentiality Impact - Complete
Integrity Impact - Complete
Availability Impact - Complete

CVSS Temporal Score - 7.4
Exploitability - Functional
Remediation Level - Official-Fix
Report Confidence - Confirmed

Impact
======

Successful exploitation of the vulnerability described in this
document may provide any user defined in the Windows Active Directory
domain with unauthorized access to view Web View information for any
ICM or Contact Center instance. In addition, the vulnerability
provides unauthorized access to the Web Admin tool for any user
defined in the Windows Active Directory domain. It should be noted
that Web Admin is only used with Cisco SUCCE. Access to Web Admin may
result in the ability to change the application configuration,
including editing application rights.

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.

+---------------------------------------+
| Software | Patch | Maintenance |
| Release | | |
|----------+---------+------------------|
| | ICM7.1 | 7.2(3) |
| 7.1(5) | (5) | (Available |
| | _ES46 | December 2007) |
+---------------------------------------+

Contact Center and ICM maintenance software can be downloaded from
the following URL:

http://tools.cisco.com/support/downloads/go/MDFTree.x?butype=cc

Workarounds
===========

Any Windows users defined in Active Directory that are not part of
the ICM/IPCC Active Directory hierarchy will have full access to the
Web View and Web Admin tools. There is no workaround. Users defined
in the Windows Active Directory domain where the IPCC servers reside
and then associated to the instance of the ICM/IPCC Active Directory
hierarchy will have correct permissions. Filters such as Transit ACLs
can then be used to allow access to the Administration Workstation
from only the trusted hosts.

Filters that deny HTTP packets using TCP port 80 and HTTPS packets
using TCP port 443 should be deployed throughout the network as part
of a tACL policy for protection of traffic that enters the network at
ingress access points. This policy should be configured to protect
the network device where the filter is applied and other devices
behind it. Filters for HTTP packets using TCP port 80 and HTTPS
packets using TCP port 443 should also be deployed in front of
vulnerable network devices so that traffic is only allowed from
trusted clients.

Additional information about tACLs is available in "Transit Access
Control Lists: Filtering at Your Edge:
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801afc76.shtml.

Additional mitigations that can be deployed on Cisco devices within
the network are available in the Cisco Applied Intelligence companion
document for this advisory:
http://www.cisco.com/warp/public/707/cisco-air-20071017-IPCC.shtml.

Obtaining Fixed Software
========================

Cisco will make free software available to address this vulnerability
for affected customers. This advisory will be updated as fixed
software becomes available. 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 "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 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 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 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:

* +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

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.

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 discovered during the resolution of customer
support cases.

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-20071017-IPCC.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-teams@xxxxxxxxx
* 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 | | Initial |
| 1.0 | 2007-Oct-17 | 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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