Cisco Security Advisory
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CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
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A vulnerability in the Identity Services Engine (ISE) integration feature of Cisco Prime Infrastructure (PI) could allow an unauthenticated, remote attacker to perform a man-in-the-middle attack against the Secure Sockets Layer (SSL) tunnel established between ISE and PI.
The vulnerability is due to improper validation of the server SSL certificate when establishing the SSL tunnel with ISE. An attacker could exploit this vulnerability by using a crafted SSL certificate and could then intercept communications between the ISE and PI. A successful exploit could allow the attacker to view and alter potentially sensitive information that the ISE maintains about clients that are connected to the network.
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-20190220-prime-validation
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Vulnerable Products
This vulnerability affects Cisco Prime Infrastructure Software Releases 2.2 through 3.4.0 when the PI server is integrated with ISE, which is disabled by default. The administrator can determine whether ISE integration is configured by choosing Administration > Servers > ISE Servers and confirming whether any ISE servers are listed.
Determining the PI Software Release
- The administrator can issue the show version command from the console CLI. The following output is from an affected application that is running PI Software Release 3.3.0:
- The administrator can view the PI release and maintenance release updates by connecting to the web interface using the http(s)://<system-ip> access URL. The PI software release is displayed on the welcome screen. The following is an example of text that is displayed in the pop-up window for PI Software Release 3.3:
Cisco Prime Infrastructure
Version 3.3
View Installed Update - The administrator can also view the PI release and maintenance releases by logging in to the web interface using the http(s)://<system-ip> access URL and choosing Gear > About Prime Infrastructure.
piconsole# show version
Cisco Application Deployment Engine OS Release: 3.1
ADE-OS Build Version: 3.1.0.001
ADE-OS System Architecture: x86_64
Copyright (c) 2009-2017 by Cisco Systems, Inc.
All rights reserved.
Hostname: XXXXXXXXX
Version information of installed applications
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Cisco Prime Infrastructure
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Version : 3.3.0
Build : 3.3.0.0.342Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that Cisco Evolved Programmable Network Manager (EPNM) is not affected by this vulnerability.
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There are no workarounds that address this vulnerability.
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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.htmlAdditionally, 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.htmlCustomers 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
Cisco fixed this vulnerability in Cisco Prime Infrastructure Software Release 3.5.
Customers can download the Cisco Prime Infrastructure Software from the Software Center on Cisco.com by doing the following:
- Click Browse all.
- Navigate to Cloud and Systems Management > Routing and Switching Management > Network Management Solutions > Prime Infrastructure.
More information about upgrading Cisco Prime Infrastructure software is in Readme for Installing Security Fix Software for the Cisco Prime Infrastructure Appliance.
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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.
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This vulnerability was found during internal security testing.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2019-February-20
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