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ESB-2016.0286 - [Cisco] Cisco Application Policy Infrastructure Controller: Unauthorised access - Existing account

Date: 04 February 2016

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0286
         Cisco Application Policy Infrastructure Controller Access
                           Control Vulnerability
                              4 February 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Application Policy Infrastructure Controller
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-1302  

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

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Application Policy Infrastructure Controller Access Control 
Vulnerability

High

Advisory ID:

cisco-sa-20160203-apic

Published:

2016 February 3 16:00 GMT

Version 1.0:

Final

CVSS Score:

Base - 8.5

Workarounds:

No workarounds available

Cisco Bug IDs:

CSCut12998

CVE-2016-1302

CWE-264

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

Legal Disclaimer

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 standalone copy or paraphrase of the text of this document that omits the 
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end 
users of Cisco products.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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===========================================================================
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