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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3205
         Cisco UCS Director and Cisco UCS Director Express for Big
               Data API Authentication Bypass Vulnerability
                              22 August 2019

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

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

Product:           Cisco UCS Director
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Root Compromise -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1938  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-ucsd-authbypass

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

Cisco UCS Director and Cisco UCS Director Express for Big Data API
Authentication Bypass Vulnerability

Priority:        Critical

Advisory ID:     cisco-sa-20190821-ucsd-authbypass

First Published: 2019 August 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds availableCisco Bug IDs:   CSCvp69746

CVE-2019-1938    

CWE-287

CVSS Score:
9.8  AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

Summary

  o 
    A vulnerability in the web-based management interface of Cisco UCS Director
    and Cisco UCS Director Express for Big Data could allow an unauthenticated,
    remote attacker to bypass authentication and execute arbitrary actions with
    administrator privileges on an affected system.

    The vulnerability is due to improper authentication request handling. An
    attacker could exploit this vulnerability by sending crafted HTTP requests
    to an affected device. A successful exploit could allow an unprivileged
    attacker to access and execute arbitrary actions through certain APIs.

    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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190821-ucsd-authbypass

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products:

       UCS Director releases 6.7.0.0 and 6.7.1.0
       UCS Director Express for Big Data releases 3.7.0.0 and 3.7.1.0

    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 this vulnerability does not affect the following
    Cisco software releases and product:

       UCS Director releases earlier than 6.7.0.0
       UCS Director Express for Big Data releases earlier than 3.7.0.0
       Integrated Management Controller Supervisor

Workarounds

  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:
    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

    Cisco fixed this vulnerability in the following software releases:

       Cisco UCS Director 6.7.2.0 and later (recommended: 6.7.3.0)
       Cisco UCS Director Express for Big Data 3.7.2.0 and later (recommended:
        3.7.3.0)

    Customers can download Cisco UCS Director software from the Software Center
    at Cisco.com by doing the following:

     1. Click Browse all .
     2. Choose Servers - Unified Computing > UCS Director > UCS Director 6.7 .
     3. Access releases by using the left pane of the UCS Director 6.7 page.

    Customers can download Cisco UCS Director Express for Big Data software
    from the Software Center at Cisco.com by doing the following:

     1. Click Browse all .
     2. Choose Servers - Unified Computing > UCS Director > UCS Director
        Express for Big Data 3.7 .
     3. Access releases by using the left pane of the UCS Director Express for
        Big Data 3.7 page.

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.

Source

  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.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190821-ucsd-authbypass

Revision History

  o +---------+--------------------------+---------+--------+-----------------+
    | Version |       Description        | Section | Status |      Date       |
    +---------+--------------------------+---------+--------+-----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-August-21  |
    +---------+--------------------------+---------+--------+-----------------+

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