var-201006-0270
Vulnerability from variot
The computer telephony integration (CTI) server component in Cisco Unified Contact Center Express (UCCX) 7.0 before 7.0(1)SR4 and 7.0(2), 6.0 before 6.0(1)SR1, and 5.0 before 5.0(2)SR3 allows remote attackers to cause a denial of service (CTI server and Node Manager failure) via a malformed CTI message. An attacker can exploit this issue to cause active agents to logout, denying service to legitimate users. This issue is tracked by Cisco Bug ID CSCso89629. These vulnerabilities are independent of each other.
Exploitation of these vulnerabilities could result in a DoS condition or an information disclosure.
This advisory is posted at:
http://www.cisco.com/warp/public/707/cisco-sa-20100609-uccx.shtml
Affected Products
Cisco UCCX is an integrated "contact center in a box" solution for use in deployments of up to 300 agents.
Vulnerable Products +------------------
The vulnerabilities described in this document affect the following products:
- Cisco UCCX versions 5.x, 6.x, and 7.x
- Cisco Customer Response Solution (CRS) versions 5.x, 6.x, and 7.x
- Cisco Unified IP Interactive Voice Response (Cisco Unified IP IVR) versions 5.x, 6.x, and 7.x
Products Confirmed Not Vulnerable +--------------------------------
No other Cisco products are currently known to be affected by these vulnerabilities. The CTI server is only started when the Integrated Call Distribution (ICD) license is enabled, Cisco Unified IP Interactive Voice Response (Cisco Unified IP IVR) deployments are not affected by the CTI server DoS vulnerability. The CTI server listens by default on TCP port 42027, although the port number can be changed in the System Port Parameters screen.
Directory Traversal Vulnerability +--------------------------------
A directory traversal vulnerability exists in the bootstrap service of the Cisco UCCX product that allows read access to any file on the system. This vulnerability is triggered by bootstrap messages addressed to TCP port 6295. The bootstrap service is used to keep the UCCX configuration synchronized across servers in a high-availability deployment model. All deployment modes can be affected, such as ICD, ICM and IP-IVR, but only if a second node has been added to the configuration. (Nodes can be listed using the Cisco UCCX Administration Web interface with the Server option in the System pull-down taskbar). A high-availability license is not required for a system to be vulnerable.
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
CSCso89629 - CTI Service DoS Vulnerability (UCCX)
CVSS Base Score - 7.8
Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete
CVSS Temporal Score - 6.4
Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
CSCsx76165 - Bootstrap Service Directory Traversal Vulnerability (UCCX)
CVSS Base Score - 7.8
Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete
CVSS Temporal Score - 6.4
Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
Impact
Successful exploitation of the Cisco UCCX CTI server DoS vulnerability will cause the agents to logout, and the Cisco UCCX server will be temporarily unavailable to agents until the node manager service and CTI server complete their automatic restart. Repeated attempts to exploit this vulnerability could result in a sustained DoS condition.
Successful exploitation of the Cisco UCCX bootstrap service directory traversal vulnerability enables an unauthenticated attacker to read any file on the system.
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.
The following tables indicate the versions of Cisco UCCX affected by the vulnerabilities described in this document. All the vulnerabilities are fixed in the latest versions of the products.
CSCso89629 - CTI service DoS vulnerability (Cisco UCCX)
+---------------------------------------------+ | Release | Vulnerable | First Fixed in | |---------+----------------+------------------| | 8.0 | Not vulnerable | | |---------+----------------+------------------| | 7.0 | Vulnerable | 7.0(1)SR4, 7.0 | | | | (2) | |---------+----------------+------------------| | 6.0 | Vulnerable | 6.0(1) SR1 | |---------+----------------+------------------| | 5.0 | Vulnerable | 5.0(2)SR3 | +---------------------------------------------+
CSCsx76165 - Bootstrap service information disclosure vulnerability (Cisco UCCX)
+---------------------------------------------+ | Release | Vulnerable | First Fixed in | |---------+-------------+---------------------| | 8.0 | Not | | | | vulnerable | | |---------+-------------+---------------------| | 7.0 | Vulnerable | 7.0(1)SR2, 7.0(2) | |---------+-------------+---------------------| | 6.0 | Vulnerable | Update to a fixed | | | | release | |---------+-------------+---------------------| | 5.0 | Vulnerable | 5.0(2)SR3 | +---------------------------------------------+
Workarounds
There are no workarounds for these vulnerabilities.
Additional mitigations that can be deployed on Cisco devices in the network are available in the Cisco Applied Mitigation Bulletin companion document for this advisory, which is available at the following link:
http://www.cisco.com/warp/public/707/cisco-amb-20100609-uccx.shtml
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 announcements or malicious use of the vulnerabilities described in this advisory.
The DoS vulnerability was found during Cisco internal testing, and the bootstrap service directory traversal vulnerability was reported to the Cisco Technical Assistance Center (TAC) by a customer.
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-20100609-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@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
- 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 | 2010-June-09 | Initial public | | 1.0 | | 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:
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"data": "The computer telephony integration (CTI) server component in Cisco Unified Contact Center Express (UCCX) 7.0 before 7.0(1)SR4 and 7.0(2), 6.0 before 6.0(1)SR1, and 5.0 before 5.0(2)SR3 allows remote attackers to cause a denial of service (CTI server and Node Manager failure) via a malformed CTI message. \nAn attacker can exploit this issue to cause active agents to logout, denying service to legitimate users. \nThis issue is tracked by Cisco Bug ID CSCso89629. These\nvulnerabilities are independent of each other. \n\nExploitation of these vulnerabilities could result in a DoS condition or an\ninformation disclosure. \n\nThis advisory is posted at:\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20100609-uccx.shtml\n\nAffected Products\n=================\n\nCisco UCCX is an integrated \"contact center in a box\" solution for use in\ndeployments of up to 300 agents. \n\nVulnerable Products\n+------------------\n\nThe vulnerabilities described in this document affect the following products:\n\n * Cisco UCCX versions 5.x, 6.x, and 7.x\n * Cisco Customer Response Solution (CRS) versions 5.x, 6.x, and 7.x\n * Cisco Unified IP Interactive Voice Response (Cisco Unified IP IVR) versions\n 5.x, 6.x, and 7.x\n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nNo other Cisco products are currently known to be affected by these\nvulnerabilities. The CTI server is only started when the\nIntegrated Call Distribution (ICD) license is enabled, Cisco Unified IP\nInteractive Voice Response (Cisco Unified IP IVR) deployments are not affected\nby the CTI server DoS vulnerability. The CTI server listens by default on TCP\nport 42027, although the port number can be changed in the System Port\nParameters screen. \n\nDirectory Traversal Vulnerability\n+--------------------------------\n\nA directory traversal vulnerability exists in the bootstrap service of the\nCisco UCCX product that allows read access to any file on the system. This\nvulnerability is triggered by bootstrap messages addressed to TCP port 6295. \nThe bootstrap service is used to keep the UCCX configuration synchronized\nacross servers in a high-availability deployment model. All deployment modes\ncan be affected, such as ICD, ICM and IP-IVR, but only if a second node has\nbeen added to the configuration. (Nodes can be listed using the Cisco UCCX\nAdministration Web interface with the Server option in the System pull-down\ntaskbar). A high-availability license is not required for a system to be\nvulnerable. \n\nVulnerability Scoring Details\n=============================\n\nCisco has provided scores for the vulnerabilities in this advisory based on the\nCommon Vulnerability Scoring System (CVSS). The CVSS scoring in this Security\nAdvisory is done in accordance with CVSS version 2.0. \n\nCVSS is a standards-based scoring method that conveys vulnerability severity\nand helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then compute\nenvironmental scores to assist in determining the impact of the vulnerability\nin individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding CVSS at:\n\nhttp://www.cisco.com/web/about/security/intelligence/cvss-qandas.html\n\nCisco has also provided a CVSS calculator to help compute the environmental\nimpact for individual networks at:\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\nCSCso89629 - CTI Service DoS Vulnerability (UCCX)\n\nCVSS Base Score - 7.8\n\nAccess Vector - Network\nAccess Complexity - Low\nAuthentication - None\nConfidentiality Impact - None\nIntegrity Impact - None\nAvailability Impact - Complete\n\nCVSS Temporal Score - 6.4\n\nExploitability - Functional\nRemediation Level - Official-Fix\nReport Confidence - Confirmed\n\nCSCsx76165 - Bootstrap Service Directory Traversal Vulnerability (UCCX)\n\nCVSS Base Score - 7.8\n\nAccess Vector - Network\nAccess Complexity - Low\nAuthentication - None\nConfidentiality Impact - None\nIntegrity Impact - None\nAvailability Impact - Complete\n\nCVSS Temporal Score - 6.4\n\nExploitability - Functional\nRemediation Level - Official-Fix\nReport Confidence - Confirmed\n\nImpact\n======\n\nSuccessful exploitation of the Cisco UCCX CTI server DoS vulnerability will\ncause the agents to logout, and the Cisco UCCX server will be temporarily\nunavailable to agents until the node manager service and CTI server complete\ntheir automatic restart. Repeated attempts to exploit this vulnerability could\nresult in a sustained DoS condition. \n\nSuccessful exploitation of the Cisco UCCX bootstrap service directory traversal\nvulnerability enables an unauthenticated attacker to read any file on the\nsystem. \n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult http://www.cisco.com/go/psirt\nand any subsequent advisories to determine exposure and a complete upgrade\nsolution. \n\nIn all cases, customers should exercise caution to be certain the devices to be\nupgraded contain sufficient memory and that current hardware and software\nconfigurations will continue to be supported properly by the new release. If\nthe information is not clear, contact the Cisco Technical Assistance Center\n(TAC) or your contracted maintenance provider for assistance. \n\nThe following tables indicate the versions of Cisco UCCX affected by the\nvulnerabilities described in this document. All the vulnerabilities are fixed\nin the latest versions of the products. \n\nCSCso89629 - CTI service DoS vulnerability (Cisco UCCX)\n\n+---------------------------------------------+\n| Release | Vulnerable | First Fixed in |\n|---------+----------------+------------------|\n| 8.0 | Not vulnerable | |\n|---------+----------------+------------------|\n| 7.0 | Vulnerable | 7.0(1)SR4, 7.0 |\n| | | (2) |\n|---------+----------------+------------------|\n| 6.0 | Vulnerable | 6.0(1) SR1 |\n|---------+----------------+------------------|\n| 5.0 | Vulnerable | 5.0(2)SR3 |\n+---------------------------------------------+\n\nCSCsx76165 - Bootstrap service information disclosure vulnerability (Cisco UCCX)\n\n+---------------------------------------------+\n| Release | Vulnerable | First Fixed in |\n|---------+-------------+---------------------|\n| 8.0 | Not | |\n| | vulnerable | |\n|---------+-------------+---------------------|\n| 7.0 | Vulnerable | 7.0(1)SR2, 7.0(2) |\n|---------+-------------+---------------------|\n| 6.0 | Vulnerable | Update to a fixed |\n| | | release |\n|---------+-------------+---------------------|\n| 5.0 | Vulnerable | 5.0(2)SR3 |\n+---------------------------------------------+\n\nWorkarounds\n===========\n\nThere are no workarounds for these vulnerabilities. \n\nAdditional mitigations that can be deployed on Cisco devices in the network are\navailable in the Cisco Applied Mitigation Bulletin companion document for this\nadvisory, which is available at the following link:\n\nhttp://www.cisco.com/warp/public/707/cisco-amb-20100609-uccx.shtml\n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these vulnerabilities. \nPrior to deploying software, customers should consult their maintenance\nprovider or check the software for feature set compatibility and known issues\nspecific to their environment. \n\nCustomers may only install and expect support for the feature sets they have\npurchased. By installing, downloading, accessing or otherwise using such\nsoftware upgrades, customers agree to be bound by the terms of Cisco\u0027s software\nlicense terms found at:\n\nhttp://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html\n\nor as otherwise set forth at Cisco.com Downloads at:\n\nhttp://www.cisco.com/public/sw-center/sw-usingswc.shtml\n\nDo not contact psirt@cisco.com or security-alert@cisco.com for software\nupgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through their regular\nupdate channels. For most customers, this means that upgrades should be\nobtained through the Software Center on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com\n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through prior or\nexisting agreements with third-party support organizations, such as Cisco\nPartners, authorized resellers, or service providers should contact that\nsupport organization for guidance and assistance with the appropriate course of\naction in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific customer\nsituations, such as product mix, network topology, traffic behavior, and\norganizational mission. Due to the variety of affected products and releases,\ncustomers should consult with their service provider or support organization to\nensure any applied workaround or fix is the most appropriate for use in the\nintended network before it is deployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco service\ncontract, and customers who purchase through third-party vendors but are\nunsuccessful in obtaining fixed software through their point of sale should\nacquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC\ncontacts are as follows. \n\n * +1 800 553 2447 (toll free from within North America)\n * +1 408 526 7209 (toll call from anywhere in the world)\n * e-mail: tac@cisco.com\n\nCustomers should have their product serial number available and be prepared to\ngive the URL of this notice as evidence of entitlement to a free upgrade. Free\nupgrades for non-contract customers must be requested through the TAC. \n\nRefer to:\n\nhttp://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html\n\nfor additional TAC contact information, including localized telephone numbers,\nand instructions and e-mail addresses for use in various languages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious use of\nthe vulnerabilities described in this advisory. \n\nThe DoS vulnerability was found during Cisco internal testing, and the\nbootstrap service directory traversal vulnerability was reported to the Cisco\nTechnical Assistance Center (TAC) by a customer. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF\nGUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS\nFOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS\nLINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO\nCHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that omits the\ndistribution URL in the following section is an uncontrolled copy, and may lack\nimportant information or contain factual errors. \n\nDistribution\n============\n\nThis advisory is posted on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20100609-uccx.shtml\n\nIn addition to worldwide web posting, a text version of this notice is\nclear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail\nand Usenet news recipients. \n\n * cust-security-announce@cisco.com\n * first-bulletins@lists.first.org\n * bugtraq@securityfocus.com\n * vulnwatch@vulnwatch.org\n * cisco@spot.colorado.edu\n * cisco-nsp@puck.nether.net\n * full-disclosure@lists.grok.org.uk\n * comp.dcom.sys.cisco@newsgate.cisco.com\n\nFuture updates of this advisory, if any, will be placed on Cisco\u0027s worldwide\nwebsite, but may or may not be actively announced on mailing lists or\nnewsgroups. Users concerned about this problem are encouraged to check the\nabove URL for any updates. \n\nRevision History\n================\n\n+---------------------------------------------+\n| Revision | 2010-June-09 | Initial public |\n| 1.0 | | release. |\n+---------------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities in Cisco products,\nobtaining assistance with security incidents, and registering to receive\nsecurity information from Cisco, is available on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com/en/US/products/products_security_vulnerability_policy.html\n\nThis includes instructions for press inquiries regarding Cisco security\nnotices. All Cisco security advisories are available at:\n\nhttp://www.cisco.com/go/psirt\n-----BEGIN PGP SIGNATURE-----\n\niD8DBQFMDsr986n/Gc8U/uARAjPCAJoDHkSUpMORQLoL4zxxrQ8QB1QGyACcDk8E\nNAOf5ZPRZU4uki85FJsRtzU=\n=z7OE\n-----END PGP SIGNATURE-----\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.