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Advisory ID: cisco-sa-20110824-cucm-cups

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110824-cucm-cups

Revision 1.1

Last Updated  2011 August 26 22:00  UTC (GMT)

For Public Release 2011 August 24 16:00  UTC (GMT)

Summary

Cisco Unified Communications Manager (previously known as Cisco CallManager) and Cisco Unified Presence Server contain an open query interface that could allow an unauthenticated, remote attacker to disclose the contents of the underlying databases on affected product versions.

Cisco has released free updated software for most supported releases. A security patch file is also available for all supported versions that will remediate this issue. The patch may be applied to active systems without requiring a reload. Customers are advised to apply a fixed version or upgrade to a fixed train. Customers who need to stay on a version for which updated software is not currently available or who can not immediately apply the update are advised to apply the patch.

No workarounds are available for this issue.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110824-cucm-cups.

Affected Products

The following products are affected by the vulnerability described in this advisory:

Vulnerable Products

Cisco Unified Communications Manager

  • Cisco Unified Communications Manager 6.x
  • Cisco Unified Communications Manager 7.x
  • Cisco Unified Communications Manager 8.0
  • Cisco Unified Communications Manager 8.5

Note: Cisco Unified Communications Manager version 5.1 reached end of software maintenance on February 13, 2010. Customers who are using Cisco Unified Communications Manager 5.x versions should contact their Cisco support team for assistance in upgrading to a supported version of Cisco Unified Communications Manager.

Cisco Unified Presence Server

  • Cisco Unified Presence Server 6.x
  • Cisco Unified Presence Server 7.x
  • Cisco Unified Presence Server 8.0
  • Cisco Unified Presence Server 8.5

Products Confirmed Not Vulnerable

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

The following products are not affected by this vulnerability:

  • Cisco Unified Communications Manager 4.x
  • Cisco Unified Communications Manager 8.6(1x)
  • Cisco Unified Presence Server 8.6(1x)
  • Cisco Unity Connection
  • Cisco Emergency Responder
  • Cisco Unified Communications Manager Business Edition 3000
  • Cisco Unified Communications Manager Business Edition 5000
  • Cisco Unified Communications Manager Business Edition 6000

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

Details

Cisco Unified Communications Manager is the call processing component of the Cisco IP Telephony solution that extends enterprise telephony features and functions to packet telephony network devices such as IP phones, media processing devices, VoIP gateways, and multimedia applications.

Cisco Unified Presence Server is a standards-based enterprise platform that brings people together in and across organizations. This open and extensible platform facilitates the secure exchange of availability and instant messaging (IM) information between Cisco Unified Communications Manager and other applications.

Open Query Interface

Cisco Unified Communications Manager and Cisco Unified Presence Server contain an open query interface that could allow an unauthenticated, remote attacker to disclose some or all of the data contained in the underlying databases. This data may include authentication credentials, configuration details, and other sensitive information.

To exploit this issue, an attacker must have the ability to open an SSL connection to an affected device via TCP ports 443 or 8443. A completed three-way TCP handshake is required to exploit this vulnerability.

This vulnerability has been assigned CVE identifier CVE-2011-1643. The vulnerability is documented in the following Cisco BugIDs:

Cisco Unified Presence Server - CSCto73833 (registered customers only

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 .

CSCti81574 - Open Query Interface

Calculate the environmental score of CSCti81574

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 - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCto63060 - Open Query Interface

Calculate the environmental score of CSCto63060

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 - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCto72183 - Open Query Interface

Calculate the environmental score of CSCto72183

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 - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCto73833 - Open Query Interface

Calculate the environmental score of CSCto73833

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 - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Successful exploitation of the vulnerability may result in the full disclosure of the contents of the affected products underlying database. Contents may include authentication credentials, configuration details, and other sensitive information.

Because the vulnerability is restricted to read-only access, it can not be directly exploited to manipulate data held in the database. However, with the appropriate knowledge an attacker could leverage the obtained information to gain administrative access to the Web based management interface.

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.

Cisco Unified Communications Manager Version

First Fixed Release

6.x

Apply COP File

7.x

7.1(5b)su4 or

Apply COP File

8.0

Apply COP File

8.5

8.5(1)su2 or

Apply COP File

8.6

Not Affected

Note: The Cisco Unified Communications Manager Security COP file is available for download from the Cisco Software Center.

Cisco Unified Presence Server

First Fixed Release

6.x

Migrate to 8.5(4) or later or 8.6(x)

7.x

Apply COP File or Migrate to 8.5(4) or later or 8.6(x)

8.0

Apply COP File or Migrate to 8.5(4) or later or 8.6(x)

8.5

8.5(4)

8.6

Not Affected

Note: A Cisco Unified Presence Server patch in the form of a Security COP file is available via TAC for versions that do not currently have a published fixed version.

Workarounds

There are no known workarounds for this issue.

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://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20110824-cucm-cups

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 public exploitation of the vulnerability described in this advisory.

This vulnerability was reported to Cisco by kxlzx.

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-20110824-cucm-cups

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 1.1

2011-August-26

Updated version naming of 8.5xnr to 8.5(4) for clarification purposes.

Revision 1.0

2011-August-24

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.