Summary

• Cisco Unified Contact Center Enterprise, Cisco Unified Contact Center Hosted, Cisco IP Contact Center Enterprise, and Cisco IP Contact Center Hosted editions are affected by a vulnerability that may result in the restart of JTapi Gateway process. Until this process restarts, no new connections can be processed. Existing connections will continue to work.

  Cisco Unified Contact Center Express and Cisco IP Contact Center Express are not affected by this vulnerability.

  Cisco has made free software available to address this vulnerability for affected customers.

   This advisory is posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070110-jtapi.

Affected Products

• Vulnerable Products

  All versions of Cisco Unified Contact Center Enterprise, Cisco Unified Contact Center Hosted, Cisco IP Contact Center Enterprise, and Cisco IP Contact Center Hosted editions are affected.

  Products Confirmed Not Vulnerable

  • Cisco Unified Contact Center Express and Cisco IP Contact Center Express editions are not affected.
  • Cisco Unified Intelligent Contact Management Enterprise and Hosted are not affected.

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

Details

• Cisco Unified Contact Center Enterprise (formerly Cisco IP Contact Center [IPCC] Enterprise), an integral component of the Cisco Unified Communications system, provides intelligent routing and call treatment with blending of multiple communication channels.

  Cisco Unified Contact Center Hosted (formerly known as Cisco IP Contact Center [IPCC] Hosted) is a platform that enables customers to move to a Customer Interaction Network. The Customer Interaction Network is a distributed, IP-based customer service infrastructure comprising a suite of multichannel services and customer relationship management applications.

  A vulnerability exists in all versions of Cisco Unified Contact Center Enterprise, Cisco Unified Contact Center Hosted, Cisco IP Contact Center Enterprise, and Cisco IP Contact Center Hosted editions that may result in the restart of JTapi Gateway process. The restart of this process can take up to several minutes and during this time no new calls can be processed. Existing calls continue to work. If the system is deployed in a redundant way, the redundant system will take over preventing a loss of service. However the JTapi Gateway on the redundant system can also be restarted by exploiting the same vulnerability.

  To exploit this vulnerability, an attacker will need to complete a 3-way TCP handshake to the JTapi server port. This port number can be dependent on how the product is deployed and whether there is a redundant pair of servers. It can be found in the Windows registry by looking up the jtapiServerPortNumber value in the Windows Registry, located at:

  • HKEY_LOCAL_MACHINE\SOFTWARE\Cisco Systems, Inc.\ICM\[instanceName]\PG[Number][A/B]\PG\CurrentVersion\JGWS\jgw[number]\JGWData\Config.

Workarounds

• No workarounds exist for this vulnerability. The following general mitigation actions are relevant for this vulnerability: Ensuring the Cisco Unified Contact Center or Cisco IP Contact Center is physically or logically separated from the data network and isolated from the Internet which will limit the exposure to the exploitation of the vulnerability from the Internet or internal data networks.

  Apply access control lists (ACLs) on routers, switches, and firewalls installed in front of the vulnerable network device such that TCP/IP traffic destined for the Cisco Unified Contact Center or Cisco IP Contact Center is allowed only from trusted sources. Refer to http://www.cisco.com/warp/public/707/tacl.html for examples on how to apply ACLs on Cisco routers.

Fixed Software

• 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 Release	Patch	Maintenance
  5.0	ICM5.0(0)_SR13_ES18
  6.0	ICM6.0(0)_SR8_ES3 6.0(0)_SR9_ES1	6.0SR10 (Available April 2007)
  7.0	ICM7.0(0)_SR4_ES43
  7.1	ICM7.1(3)_ES5	7.1(4) (Available March 2007)

   

  Maintenance releases can be downloaded at: https://sec.cloudapps.cisco.com/support/downloads/go/MDFTree.x?butype=cc

  ICM5.0(0)_SR13_ES18 can be downloaded at: http://www.cisco.com/pcgi-bin/tablebuild.pl/d4b330d7b9c07d33f2833e1be69c6145

  6.0.00_SR08_ES3 can be downloaded at: http://www.cisco.com/pcgi-bin/tablebuild.pl/48b796a9ba353f2d02897ae3e6bb1140

  6.0.00_SR09_ES1 can be downloaded at: http://www.cisco.com/pcgi-bin/tablebuild.pl/2008d93eba6ab0cd6be05634f90962f3

  7.0.00_SR04_ES43 can be downloaded at: http://www.cisco.com/pcgi-bin/tablebuild.pl/47564eac9ea7b12357226a5f20bbbd66

  7.1.03_ES5 can be downloaded at: http://www.cisco.com/pcgi-bin/tablebuild.pl/9df0152592e9779b3f9e8701a94e4422

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 a customer.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070110-jtapi

Revision History

• Revision 1.1	2007-Jan-29	In Software Versions and Fixes section, updated information for Software Release 6.0.
  Revision 1.0	2007-Jan-10	Initial public release.

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