Cisco Security Advisory

Cisco Prime Central for Hosted Collaboration Solution Assurance Denial of Service Vulnerabilities

Advisory ID: cisco-sa-20130821-hcm

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130821-hcm

Revision 1.0

For Public Release 2013 August 21 16:00  UTC (GMT)


Summary

Cisco Prime Central for Hosted Collaboration Solution (HCS) Assurance contains multiple vulnerabilities that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. Exploitation of these vulnerabilities could interrupt the monitoring of voice services and exhaust system resources.

Cisco has released free software updates that address these vulnerabilities. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130821-hcm

Affected Products

Vulnerable Products

The following products are affected by the vulnerabilities that are described in this advisory:
  • Cisco Prime Central for HCS Assurance 8.6
  • Cisco Prime Central for HCS Assurance 9.0
  • Cisco Prime Central for HCS Assurance 9.1

Products Confirmed Not Vulnerable

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

Details

Cisco Prime Central for HCS Assurance, formerly known as Cisco Hosted Collaboration Mediation (HCM), is a service that allows Cisco partners to provide a wide range of Cisco collaboration applications to their customers as a subscriber-based solution.

Cisco Prime Central for HCS Assurance contains multiple vulnerabilities that could allow an unauthenticated, remote attacker to send a TCP connection flood to disrupt services and cause a DoS condition on the affected system.

Memory Leak Vulnerability

Cisco Prime Central for HCS Assurance contains a memory leak vulnerability that could allow an unauthenticated, remote attacker to execute a sustained flood against vulnerable TCP ports to cause a DoS condition on the affected system. This vulnerability is documented in Cisco bug ID CSCub59158 (registered customers only) and has been assigned Common Vulnerabilities and Exposure (CVE) ID CVE-2013-3390.A system restart is required to clear the condition. Cisco Hosted Collaboration Mediation Service Assurance 9.1 and earlier are affected.

Memory Exhaustion Vulnerabilities

Cisco Prime Central for HCS Assurance contains two memory exhaustion vulnerabilities that could allow an unauthenticated, remote attacker to execute a sustained TCP connection flood against an affected system. A sustained TCP connection flood against the affected ports will result in memory exhaustion, preventing access to the web GUI and cause out-of-memory exceptions when executing basic commands.

The first vulnerability is documented in Cisco bug ID CSCtz90114 (registered customers only) and has been assigned CVE ID CVE-2013-3389. TCP ports 61615 and 61616 are affected by this vulnerability. Cisco Hosted Collaboration Mediation Service Assurance 9.1 and earlier is affected.

The second vulnerability is documented in Cisco bug ID CSCtz92776 (registered customers only) and has been assigned CVE ID CVE-2013-3388. The Ephemeral Java Port (44444) is affected by this vulnerability.  Cisco Hosted Collaboration Mediation Service Assurance 9.1 and earlier are affected.

Disk Exhaustion Vulnerability

Cisco Prime Central for HCS Assurance contains a disk exhaustion vulnerability that could allow an unauthenticated, remote attacker to cause a DoS condition on an affected system. This vulnerability is documented in Cisco bug ID CSCua42724 (registered customers only) and has been assigned CVE ID CVE-2013-3387.  A TCP connection flood will generate error logs until the server disk space is exhausted.  The log files must be removed to recover from this condition. The Omnibus Port (TCP 5400) is affected by this vulnerability. Cisco Hosted Collaboration Mediation Service Assurance 9.1 and earlier are affected.

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



CSCub59158: Memory Leak After TCP Flood

Calculate the environmental score of CSCub59158

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




CSCtz90114: Prime Central Memory Exhaustion From TCP Flood

Calculate the environmental score of CSCtz90114

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




CSCtz92776: Memory Exhaustion After TCP Flood

Calculate the environmental score of CSCtz92776

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




CSCua42724: Disk Exhaustion From Logging of TCP Flood

Calculate the environmental score of CSCua42724

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

Successful exploitation of the vulnerabilities that are described in this advisory could allow a remote attacker to trigger a memory leak or DoS condition that could interrupt services.

Software Versions and Fixes

When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.

Cisco Prime Central for HCS Assurance Version   Recommended Release
 8.x  9.2(1)
 9.x  9.2(1)

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

No workarounds are available for these vulnerabilities.

Obtaining Fixed Software

Cisco has released free software updates that address the vulnerability 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.

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 Navigator on Cisco.com at http://www.cisco.com/cisco/software/navigator.html.

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.

Refer 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 vulnerabilities that are described in this advisory.

These vulnerabilities were discovered through internal testing.

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-20130821-hcm

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 1.0 2013-August-21 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.


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