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             AUSCERT External Security Bulletin Redistribution

      Cisco Prime Infrastructure Certificate Validation Vulnerability
                             21 February 2019


        AusCERT Security Bulletin Summary

Product:           Cisco Prime Infrastructure
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1659  

Original Bulletin: 

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

Cisco Prime Infrastructure Certificate Validation Vulnerability

Priority:        High

Advisory ID:     cisco-sa-20190220-prime-validation

First Published: 2019 February 20 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj87015



CVSS Score:


  o 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

    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:

Affected Products

  o 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

     1. 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:

            piconsole# show version
            Cisco Application Deployment Engine OS Release: 3.1
            ADE-OS Build Version:
            ADE-OS System Architecture: x86_64

            Copyright (c) 2009-2017 by Cisco Systems, Inc.
            All rights reserved.
            Hostname: XXXXXXXXX

            Version information of installed applications

            Cisco Prime Infrastructure
            Version : 3.3.0
            Build :

     2. 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

     3. 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.

    Products 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.


  o There are no workarounds that address this vulnerability.

Fixed Software

  o 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:

    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

    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:

    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

    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.

Exploitation and Public Announcements

  o 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.


  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o 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.

Subscribe to Cisco Security Notifications

  o Subscribe


  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/

Revision History

    | Version  |       Description        | Section  | Status |       Date        |
    | 1.0      | Initial public release.  | --        | Final  | 2019-February-20  |

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