var-200910-0347
Vulnerability from variot
The TimesTenD process in Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4) allows remote attackers to cause a denial of service (process crash) via a large number of TCP connections to ports 16200 and 22794, aka Bug ID CSCsy17662. Cisco Unified Presence of TimesTenD The process involves service disruption (DoS) There is a vulnerability that becomes a condition. The problem is Bug ID CSCsy17662 It is a problem.By a third party 16200 and 22794 Many to port TCP Service disruption through connection (DoS) There is a possibility of being put into a state. An attacker can exploit this issue to cause the TimesTenD process to restart, denying service to legitimate users. These vulnerabilities were discovered internally by Cisco, and there are no workarounds.
Cisco has released free software updates that address these vulnerabilities. The software version can be determined by running the command "show version active" via the Command Line Interface (CLI).
Products Confirmed Not Vulnerable +--------------------------------
No other Cisco products are currently known to be affected by these vulnerabilities. TCP 3-way handshakes must be completed for the attack to be successful. The TimesTenD process will be automatically restarted upon failure. This vulnerability is documented in Cisco Bug ID CSCsy17662 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2874. An attacker can overwhelm the table that is used to track network connections and prevent new connections from being established to system services by establishing many TCP connections with a vulnerable system. Any service that listens to a TCP port on a vulnerable system could be affected by this vulnerability. This vulnerability is documented in Cisco Bug ID CSCsw52371 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2052.
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
CSCsy17662 - TimesTenD Coredump During TCP Flood
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
CSCsw52371 - CUP: IP_Conntrack Fills Up During TCP Flood Attack
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 any of the vulnerabilities may result in the interruption of presence services.
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.
Cisco Unified Presence version 6.0(6) is available at the following link:
http://tools.cisco.com/support/downloads/go/ReleaseType.x?optPlat=&isPlatform=Y&mdfid=281010019&sftType=Unified+Presence+Server+%28CUPS%29+Updates&treeName=Voice+and+Unified+Communications&modelName=Cisco+Unified+Presence+Version+6.0&mdfLevel=null&treeMdfId=278875240&modifmdfid=null&imname=&hybrid=Y&imst=N
Cisco Unified Presence version 7.0(5) is available at the following link:
http://tools.cisco.com/support/downloads/go/PlatformList.x?sftType=Unified+Presence+Server+%28CUPS%29+Updates&mdfid=281820245&treeName=Voice+and+Unified+Communications&mdfLevel=Software%20Version/Option&url=null&modelName=Cisco+Unified+Presence+Version+7.0&isPlatform=N&treeMdfId=278875240&modifmdfid=null&imname=&hybrid=Y&imst=N
Note: Administrators running Cisco Unified Presence version 1.x are encouraged to upgrade to version 6.0 or later.
Workarounds
No workarounds are available; however, mitigations that can be deployed on Cisco devices within 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-20091014-cup.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 vulnerability described in this advisory. These vulnerabilities were discovered by Cisco.
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-20091014-cup.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 | | Initial | | 1.0 | 2009-October-14 | 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:
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"data": "The TimesTenD process in Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4) allows remote attackers to cause a denial of service (process crash) via a large number of TCP connections to ports 16200 and 22794, aka Bug ID CSCsy17662. Cisco Unified Presence of TimesTenD The process involves service disruption (DoS) There is a vulnerability that becomes a condition. The problem is Bug ID CSCsy17662 It is a problem.By a third party 16200 and 22794 Many to port TCP Service disruption through connection (DoS) There is a possibility of being put into a state. \nAn attacker can exploit this issue to cause the TimesTenD process to restart, denying service to legitimate users. \nThese vulnerabilities were discovered internally by Cisco, and there\nare no workarounds. \n\nCisco has released free software updates that address these\nvulnerabilities. The software version can\nbe determined by running the command \"show version active\" via the\nCommand Line Interface (CLI). \n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nNo other Cisco products are currently known to be affected by these\nvulnerabilities. TCP 3-way\nhandshakes must be completed for the attack to be successful. The\nTimesTenD process will be automatically restarted upon failure. This\nvulnerability is documented in Cisco Bug ID CSCsy17662 and has been\nassigned Common Vulnerabilities and Exposures (CVE) ID CVE-2009-2874. An attacker\ncan overwhelm the table that is used to track network connections and\nprevent new connections from being established to system services by\nestablishing many TCP connections with a vulnerable system. Any\nservice that listens to a TCP port on a vulnerable system could be\naffected by this vulnerability. This vulnerability is documented in\nCisco Bug ID CSCsw52371 and has been assigned Common Vulnerabilities\nand Exposures (CVE) ID CVE-2009-2052. \n\nVulnerability Scoring Details\n=============================\n\nCisco has provided scores for the vulnerabilities in this advisory\nbased on the Common Vulnerability Scoring System (CVSS). The CVSS\nscoring in this Security Advisory is done in accordance with CVSS\nversion 2.0. \n\nCVSS is a standards-based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of\nthe vulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding\nCVSS 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\nenvironmental impact for individual networks at:\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\nCSCsy17662 - TimesTenD Coredump During TCP Flood\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\nCSCsw52371 - CUP: IP_Conntrack Fills Up During TCP Flood Attack\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 any of the vulnerabilities may result in\nthe interruption of presence services. \n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult\nhttp://www.cisco.com/go/psirt and any subsequent advisories to\ndetermine exposure and a complete upgrade solution. \n\nCisco Unified Presence version 6.0(6) is available at the following\nlink:\n\nhttp://tools.cisco.com/support/downloads/go/ReleaseType.x?optPlat=\u0026isPlatform=Y\u0026mdfid=281010019\u0026sftType=Unified+Presence+Server+%28CUPS%29+Updates\u0026treeName=Voice+and+Unified+Communications\u0026modelName=Cisco+Unified+Presence+Version+6.0\u0026mdfLevel=null\u0026treeMdfId=278875240\u0026modifmdfid=null\u0026imname=\u0026hybrid=Y\u0026imst=N\n\nCisco Unified Presence version 7.0(5) is available at the following\nlink:\n\nhttp://tools.cisco.com/support/downloads/go/PlatformList.x?sftType=Unified+Presence+Server+%28CUPS%29+Updates\u0026mdfid=281820245\u0026treeName=Voice+and+Unified+Communications\u0026mdfLevel=Software%20Version/Option\u0026url=null\u0026modelName=Cisco+Unified+Presence+Version+7.0\u0026isPlatform=N\u0026treeMdfId=278875240\u0026modifmdfid=null\u0026imname=\u0026hybrid=Y\u0026imst=N\n\nNote: Administrators running Cisco Unified Presence version 1.x are\nencouraged to upgrade to version 6.0 or later. \n\nWorkarounds\n===========\n\nNo workarounds are available; however, mitigations that can be\ndeployed on Cisco devices within the network are available in the\nCisco 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-20091014-cup.shtml\n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these\nvulnerabilities. Prior to deploying software, customers should\nconsult their maintenance provider or check the software for feature\nset compatibility and known issues specific to their environment. \n\nCustomers may only install and expect support for the feature sets\nthey have purchased. By installing, downloading, accessing or\notherwise using such software upgrades, customers agree to be bound\nby the terms of Cisco\u0027s software license 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\nsoftware upgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through\ntheir regular update channels. For most customers, this means that\nupgrades should be obtained through the Software Center on Cisco\u0027s\nworldwide website at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through\nprior or existing agreements with third-party support organizations,\nsuch as Cisco Partners, authorized resellers, or service providers\nshould contact that support organization for guidance and assistance\nwith the appropriate course of action in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific\ncustomer situations, such as product mix, network topology, traffic\nbehavior, and organizational mission. Due to the variety of affected\nproducts and releases, customers should consult with their service\nprovider or support organization to ensure any applied workaround or\nfix is the most appropriate for use in the intended network before it\nis deployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco\nservice contract, and customers who purchase through third-party\nvendors but are unsuccessful in obtaining fixed software through\ntheir point of sale should acquire upgrades by contacting the Cisco\nTechnical Assistance Center (TAC). TAC contacts 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\nprepared to give the URL of this notice as evidence of entitlement to\na free upgrade. Free upgrades for non-contract customers must be\nrequested 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\nnumbers, and instructions and e-mail addresses for use in various\nlanguages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerability described in this advisory. These\nvulnerabilities were discovered by Cisco. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY\nKIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF\nMERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE\nINFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS\nAT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS\nDOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that\nomits the distribution URL in the following section is an\nuncontrolled copy, and may lack important information or contain\nfactual 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-20091014-cup.shtml\n\nIn addition to worldwide web posting, a text version of this notice\nis clear-signed with the Cisco PSIRT PGP key and is posted to the\nfollowing e-mail and 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\nworldwide website, but may or may not be actively announced on\nmailing lists or newsgroups. Users concerned about this problem are\nencouraged to check the above URL for any updates. \n\nRevision History\n================\n\n+---------------------------------------+\n| Revision | | Initial |\n| 1.0 | 2009-October-14 | public |\n| | | release |\n+---------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities in Cisco\nproducts, obtaining assistance with security incidents, and\nregistering to receive security information from Cisco, is available\non 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\nsecurity notices. All Cisco security advisories are available at:\n\nhttp://www.cisco.com/go/psirt\n-----BEGIN PGP SIGNATURE-----\n\niD8DBQFK1eiV86n/Gc8U/uARAtI9AKCY7cOV/RqoTcFB0pjPXMW0HXuWWwCePvum\n65XRgnU+TCu1veQd+gWlE7g=\n=uBzn\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.