Summary

• A vulnerability in the role-based access control (RBAC) of the Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated remote user to make configuration changes outside of their configured access privileges.  
  
  The vulnerability is due to eligibility logic in the RBAC processing code. An authenticated user could exploit this vulnerability by sending specially crafted representational state transfer (REST) requests to the APIC. An exploit could allow the authenticated user to make configuration changes to the APIC beyond the configured privilege for their role.
  
  Cisco has released software updates that address this vulnerability.
  
  This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160203-apic
  

Affected Products

• Vulnerable Products

  The following products are known to be affected by this vulnerability when running affected versions of software: 
  

  • Cisco Application Policy Infrastructure Controllers when running software versions prior to 1.0(3h) and 1.1(1j)
  • Cisco Nexus 9000 Series ACI Mode Switches when running software versions prior to 11.0(3h) and 11.1(1j)

  This vulnerability affects configurations that are using either signature-based transactions or username/password configurations.

  Products Confirmed Not Vulnerable

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

Workarounds

• There are no workarounds that address this vulnerability.

Fixed Software

• Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
   
  http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html
  
  Additionally, customers may only download software for which they have a valid license, procured from Cisco directly or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
  
  When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses 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 upgrade 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.
  
  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):
  
  http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
  
  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.
   
  Fixed Versions
  
  Cisco Application Policy Infrastructure Controllers running software versions prior to 1.0(3h) and 1.1(1j) are affected. The following list shows the first fixed releases:
  
  

  • 1.0(3h) or later
  • 1.0(4h) or later
  • 1.1(1j) or later
  • 1.1(2h) or later
  • 1.1(3f) or later
  • 1.1(4e) or later
  • 1.2(1i) or later

  
  Cisco Nexus 9000 Series ACI Mode Switches running software versions prior to 11.0(3h) and 11.1(1j) are affected. The following list shows the first fixed releases:
  
  

  • 11.0(3h) or later
  • 11.0(4h) or later
  • 11.1(1j) or later
  • 11.1(2h) or later
  • 11.1(3f) or later
  • 11.1(4e) or later
  • 11.2(1i) or later

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.
  

Source

• This vulnerability was discovered during internal security testing.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160203-apic

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	—	Final	2016-February-03

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