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Multiple Vulnerabilities in Cisco Unity Connection

Advisory ID: cisco-sa-20120229-cuc

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-cuc

Revision 1.1

Last Updated  2012 April 2 14:16  UTC (GMT)

For Public Release 2012 Februrary 29 16:00  UTC (GMT)


Summary

Cisco Unity Connection contains two vulnerabilities:

  • Cisco Unity Connection Privilege Escalation Vulnerability
  • Cisco Unity Connection Denial of Service Vulnerability

Exploitation of the Cisco Unity Connection Privilege Escalation Vulnerability may allow an authenticated, remote attacker to elevate privileges and obtain full access to the affected system.

Exploitation of the Cisco Unity Connection Denial of Service Vulnerability  may allow an unauthenticated, remote attacker to cause system services to terminate unexpectedly, which may result in a denial of service condition.

Cisco has released free software updates that address these vulnerabilities. There are no workarounds that mitigate these vulnerabilities.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-cuc

Affected Products

Vulnerable Products

Cisco Unity Connection Privilege Escalation Vulnerability

The following versions of Cisco Unity Connection are vulnerable:

Version Affected
Prior to 7.1 Yes
7.1 Yes
8.0 No
8.5 No
8.6 No

Note: Cisco Unity Connection versions prior to 7.1 reached end of software maintenance. Customers running versions prior to 7.1 should contact their Cisco support team for assistance in upgrading to a supported version of Cisco Unity Connection.

Cisco Unity Connection Denial of Service Vulnerability


The following versions of Cisco Unity Connection are vulnerable:

Version Affected
Prior to 7.1 Yes
7.1 Yes
8.0 Yes
8.5 Yes
8.6 Yes

Note: Cisco Unity Connection versions prior to 7.1 reached end of software maintenance. Customers running versions prior to 7.1 should contact their Cisco support team for assistance in upgrading to a supported version of Cisco Unity Connection.

Information About Cisco Business Edition

Cisco Business Edition, Cisco Business Edition 5000, and Cisco Business Edition 6000 are affected by these vulnerabilities if the Cisco Unity Connection version that is used is among the affected versions in the tables reported in the "Vulnerable Products" section of the security advisory.

Cisco Business Edition 3000 is not affected by the vulnerabilities included in this security advisory.

Determine the Software Version

To determine the Cisco Unity Connection software version that an appliance is running, administrators can access the Cisco Unity Connection web interface and click the " About" link at the top right.

Optionally administrators can log in to the command-line interface, and access the main menu. The software version can be identified by using the show version active command. The following example shows Cisco Unity Connection running version 8.6.2:
     
   
Welcome to the Platform Command Line Interface

admin:show version active
Active Master Version: 8.6.2.10000-30

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by these vulnerabilities. Cisco Unified Communication Manager and Cisco Business Edition 3000 are not vulnerable to these vulnerabilities.

Details

Cisco Unity Connection is a feature-rich voice messaging platform that runs on the same Linux-based Cisco Unified Communications Operating System that is used by Cisco Unified Communications Manager. Cisco Unity Connection scales to support enterprise organizations with up to 100,000 users.

Cisco Unity Connection Privilege Escalation Vulnerability


Cisco Unity Connection contains a vulnerability that may allow an authenticated, remote attacker with privilege of the Help Desk Administrator role to elevate privileges and obtain full access to the affected system.
The vulnerability is due to improper privilege assignment and validation of the "Help Desk Administrator" role. An attacker could exploit this vulnerability by logging in to the system as the Help Desk Administrator user and changing the password for the administrative user.

This vulnerability is documented in Cisco bug ID CSCtd45141 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0366.

Cisco Unity Connection Denial of Service Vulnerability

Cisco Unity Connection contains a vulnerability that may allow an unauthenticated, remote attacker to cause system services to terminate unexpectedly, which may result in a denial of service.
The vulnerability is due to improper handling of TCP segments. An attacker could exploit this vulnerability by sending a sequence of TCP segments to the affected system.


This vulnerability is documented in Cisco bug ID CSCtq67899 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0367.

Vulnerability Scoring Details

Cisco has scored the vulnerabilities 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

 



CSCtd45141 - Cisco Unity Privilege Escalation Vulnerability

Calculate the environmental score of CSCtd45141

CVSS Base Score - 9.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

Single

Complete

Complete

Complete

CVSS Temporal Score - 7.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed



CSCtq67899- Cisco Unity Denial Of Service Vulnerability

Calculate the environmental score of CSCtq67899

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

None

None

Complete

CVSS Temporal Score - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Cisco Unity Connection Privilege Escalation Vulnerability

Successful exploitation of the privilege escalation vulnerability may allow an authenticated, remote attacker to elevate privileges and obtain full access to the affected system.

Cisco Unity Connection Denial of Service Vulnerability

Successful exploitation of the DoS vulnerability may allow an unauthenticated, remote attacker to cause system services to terminate unexpectedly, which may result in a denial of service condition.

Software Versions and Fixes

Cisco has released free software updates that address these vulnerabilities.

Cisco Unity Connection Privilege Escalation Vulnerability - CSCtd45141

The following table contains the first fixed releases of software for Cisco Unity Connection, Cisco Business Edition, Cisco Business Edition 5000, and Cisco Business Edition 6000 that address the Cisco Unity Connection Privilege Escalation Vulnerability:

 

Version First Fix In
7.1 7.1.3b(Su2), 7.1.5
8.0 Not Affected
8.5 Not Affected
8.6 Not Affected

Cisco Unity Connection Denial of Service Vulnerability - CSCtq67899

The following table contains the first fixed releases of software for Cisco Unity Connection, Cisco Business Edition, Cisco Business Edition 5000, and Cisco Business Edition 6000 that address the Cisco Unity Connection Denial of Service Vulnerability:

 

Version Remediation
7.1 7.1.5b(Su5) - Available April 6, 2012
8.0 Upgrade to 8.5.1(Su3)
8.5 8.5.1(Su3)
8.6 8.6.2

Remediation table

The following table contains the recommended releases, which include the fixes for all the vulnerabilities described in this advisory:

 

Version Remediation
7.1 7.1.5b(Su5) - Available April 6, 2012
8.0 Upgrade to 8.5.1(Su3)
8.5 8.5.1(Su3)
8.6 8.6.2

When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses 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

There are no workarounds that mitigate these vulnerabilities.

Obtaining Fixed Software

Cisco has released free software updates that address the vulnerabilities described in this advisory. 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, or as set forth 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, upgrades should be obtained through the Software Center on Cisco.com at http://www.cisco.com.

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.

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

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

The vulnerabilities described in this advisory were found during internal testing or 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 Security Intelligence Operations at the following link

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120229-cuc

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 1.1 2012-April-02 Updated software release date.
Revision 1.0 2012-February-29 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/web/about/security/psirt/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.