Summary

• A vulnerability in the administrative web interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to gain additional privileges on an affected device.

  The vulnerability is due to improper controls on certain pages in the web interface. An attacker could exploit this vulnerability by authenticating to the device with an administrator account and sending a crafted HTTP request. A successful exploit could allow the attacker to create additional Admin accounts with different user roles. An attacker could then use these accounts to perform actions within their scope. The attacker would need valid Admin credentials for the device. This vulnerability cannot be exploited to add a Super Admin account.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-ise-privilege

Affected Products

• Vulnerable Products

  This vulnerability affects Cisco Identity Services Engine (ISE). For information about which Cisco ISE releases are vulnerable, see the Fixed Software section of this advisory.

  To determine which release of the software is currently running on a device, administrators may use the show version command in the device CLI or navigate to the top-right corner and click Settings (gear icon) > About Identity Service Engine in the Admin portal. The output of the command in the CLI is similar to the following example:
  

  ServiceEngine115/admin# show version 

  Cisco Application Deployment Engine OS Release: 3.0
  ADE-OS Build Version: 3.0.3.030
  ADE-OS System Architecture: x86_64
  
  Copyright (c) 2005-2014 by Cisco Systems, Inc.
  All rights reserved.
  Hostname: ServiceEngine115
  
  
  Version information of installed applications
  ---------------------------------------------
  
  Cisco Identity Services Engine
  ---------------------------------------------
  Version : 2.3.0.298
  Build Date : Tue Jul 25 08:43:13 2017
  Install Date : Thu Aug 31 14:08:38 2017
  Cisco Identity Services Engine Patch 
  ---------------------------------------------
  Version      : 1
  Install Date : Wed Oct 25 01:57:01 2017
  
  

  Products Confirmed Not Vulnerable

  Only products listed in the Vulnerable Products section of this advisory are 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:
  https://www.cisco.com/c/en/us/products/end-user-license-agreement.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 regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, 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.

  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 TAC:
  https://www.cisco.com/c/en/us/support/web/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 Releases

  Customers with a device that is running an affected release are advised to upgrade to an appropriate release as indicated in the following table:

  Cisco Identity Services Engine Release	First Fixed Release for This Vulnerability
  Prior to 2.2.0	Affected; migrate to 2.2.0 Patch 101
  2.2.0	2.2.0 Patch 10
  2.2.1	2.2.1 Patch 1
  2.3	2.3 Patch 5
  2.4	2.4 Patch 2

  1. Release 2.1.0 is fixed in Patch 9, which can be obtained directly from the ISE development team by contacting the Cisco Technical Assistance Center (TAC).

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 found during internal security testing.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-ise-privilege

Revision History

• Version	Description	Section	Status	Date
  1.1	Added information about how to obtain the fix for ISE 2.1.0	Fixed Software	Final	2019-September-17
  1.0	Initial public release.	-	Final	2019-January-23

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