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Cisco Security Advisory

Multiple Vulnerabilities in Cisco Prime Data Center Network Manager

Advisory ID: cisco-sa-20130918-dcnm

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130918-dcnm

Revision 1.2

Last Updated  2013 November 5 22:18  UTC (GMT)

For Public Release 2013 September 18 16:00  UTC (GMT)

Related Resources:

View related Applied Mitigation Bulletin

Summary

Cisco Prime Data Center Network Manager (DCNM) contains multiple vulnerabilities that could allow an unauthenticated, remote attacker to disclose file components, and access text files on an affected device. Various components of Cisco Prime DCNM are affected.  These vulnerabilities can be exploited independently on the same device; however, a release that is affected by one of the vulnerabilities may not be affected by the others.

Cisco Prime DCNM is affected by the following vulnerabilities:

  • Cisco Prime DCNM Information Disclosure Vulnerability
  • Cisco Prime DCNM Remote Command Execution Vulnerabilities
  • Cisco Prime DCNM XML External Entity Injection Vulnerability


Cisco has released free software updates that address these vulnerabilities. There are currently no workarounds that mitigate these vulnerabilities. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130918-dcnm

Affected Products

Vulnerable Products

The following products are affected by the vulnerabilities that are described in this advisory:

 The vulnerabilities described in this advisory affect all versions of Cisco Prime DCNM prior to 6.2(1).

Products Confirmed Not Vulnerable

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

Details

Cisco Prime DCNM, previously known as Cisco Data Center Network Manager, is a network management application that combines the management of Ethernet and storage networks into a single dashboard to help network and storage administrators manage and troubleshoot health and performance across different families of Cisco products that run Cisco NX-OS Software.

Cisco Prime DCNM Information Disclosure Vulnerability

The Cisco DCNM-SAN Server component of Cisco Prime DCNM contains a vulnerability that could allow an unauthenticated, remote attacker to disclose arbitrary file contents on an affected system.

This vulnerability has been documented in Cisco bug ID CSCue77029 (registered customers only) and has been assigned CVE identifier CVE-2013-5487.

Cisco Prime DCNM Remote Command Execution Vulnerabilities

The Cisco DCNM-SAN Server component of Cisco Prime DCNM contains two vulnerabilities that could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system that hosts the Cisco Prime DCNM application.

Commands are executed in the context of the system user for Cisco Prime DCNM running on Microsoft Windows or the root user for Cisco Prime DCNM running on Linux.

These vulnerabilities have been documented in Cisco bug IDs CSCue77035 (registered customers only) and CSCue77036 (registered customers only), and have been assigned the CVE identifier CVE-2013-5486.


Cisco Prime DCNM XML External Entity Injection Vulnerability

Cisco Prime DCNM is affected by a vulnerability which could allow an unauthenticated, remote attacker to access arbitrary text files on the underlying operating system with the privilege of root using an XML external entity injection attack.  When processing incoming requests, XML external entity references and injected tags can result in disclosure of information.

This vulnerability is documented in Cisco bug ID CSCud80148 (registered customers only) and has been assigned CVE identifier CVE-2013-5490

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


CSCue77029 - Cisco Prime DCNM Information Disclosure Vulnerability

Calculate the environmental score of CSCue77029

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

None

None

CVSS Temporal Score - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed




CSCue77035 - Cisco Prime DCNM Remote Code Execution Vulnerability

Calculate the environmental score of CSCue77035

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed




CSCue77036 - Cisco DCNM Remote Code Execution Vulnerability

Calculate the environmental score of CSCue77036

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed




CSCud80148 - Cisco Prime DCNM XML External Entity Injection Vulnerability

Calculate the environmental score of CSCud80148

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

None

None

CVSS Temporal Score - 6.8

Exploitability

Remediation Level

Report Confidence

High

Official-Fix

Confirmed


Impact

Cisco Prime DCNM Remote Command Execution Vulnerabilities

Successful exploitation of the remote command execution vulnerability could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system that hosts the Cisco Prime DCNM application in the context of the System user for Cisco Prime DCNM running on Microsoft Windows, or the root user for Cisco Prime DCNM running on Linux.

Cisco Prime DCNM Information Disclosure Vulnerability

Successful exploitation of the information disclosure vulnerability could allow an unauthenticated, remote attacker to disclose arbitrary file contents on an affected system.

Cisco Prime DCNM XML External Entity Injection Vulnerability

Successful exploitation of the XML external entity injection vulnerability could allow an unauthenticated, remote attacker to read arbitrary file contents on an affected system.

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.

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.

All of the vulnerabilities included in this advisory are fixed in the Cisco Prime DCNM version 6.2(1) or later.

You can download the latest version of Cisco Data Center Network Manager by clicking on the following link:
http://software.cisco.com/download/release.html?mdfid=281722751&softwareid=282088134&release=6.2%283%29&relind=AVAILABLE&rellifecycle=&reltype=latest&i=rm

Cisco Prime DCNM can be downloaded from the Software Center on Cisco.com by visiting http://www.cisco.com/cisco/software/navigator.html and navigating to Products > Cloud and Systems Management > Data Center Infrastructure Management > Cisco Prime Data Center Network Manager.

Workarounds

Additional mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this Advisory: http://tools.cisco.com/security/center/viewAMBAlert.x?alertId=30682

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 vulnerability that is described in this advisory.

The Cisco Prime DCNM remote command execution vulnerabilities and the Cisco Prime DCNM information disclosure vulnerability were reported to Cisco by Andrea Micalizzi aka rgod working with HP's Zero Day Initiative.

The Cisco Prime DCNM XML external entity injection vulnerability was reported to Cisco by Ben Williams with NCC Group.

Cisco would like to thank these researchers for reporting these vulnerabilities to us and for working with us toward a coordinated disclosure of the vulnerabilities.

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-20130918-dcnm

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 1.2 2013-November-05 Updated "Exploitation and Public Annoucements" section to include the name of the researcher working with the HP Zero Day Initiative.
Revision 1.1 2013-September-19 Reworded the vulnerable versions to be more concise. Updated "Software Versions and Fixes" section to clarify the fixed version.
Revision 1.0 2013-September-18 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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