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             AUSCERT External Security Bulletin Redistribution

          Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W
                 Series Default Credentials Vulnerability
                              20 August 2020


        AusCERT Security Bulletin Summary

Product:           Cisco vWAAS
Publisher:         Cisco Systems
Operating System:  Network Appliance
Impact/Access:     Administrator Compromise -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-3446  

Original Bulletin: 

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Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W Series Default
Credentials Vulnerability

Priority:        Critical
Advisory ID:     cisco-sa-waas-encsw-cspw-cred-hZzL29A7
First Published: 2020 August 19 16:00 GMT
Version 1.0:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvg93455CSCvr36481


CVSS Score:


  o A vulnerability in Cisco Virtual Wide Area Application Services (vWAAS)
    with Cisco Enterprise NFV Infrastructure Software (NFVIS)-bundled images
    for Cisco ENCS 5400-W Series and CSP 5000-W Series appliances could allow
    an unauthenticated, remote attacker to log into the NFVIS CLI of an
    affected device by using accounts that have a default, static password.

    The vulnerability exists because the affected software has user accounts
    with default, static passwords. An attacker with access to the NFVIS CLI of
    an affected device could exploit this vulnerability by logging into the
    CLI. A successful exploit could allow the attacker to access the NFVIS CLI
    with administrator privileges.

    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 ENCS 5400-W Series and CSP 5000-W Series
    appliances if they are running Cisco vWAAS with NFVIS-bundled image
    releases 6.4.5, or 6.4.3d and earlier.

    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 standalone
    NFVIS running on Cisco ENCS 5000 Series and Cisco CSP 5000 Series devices,
    and it does not affect standalone vWAAS software or WAAS software running
    on Cisco Wide Area Virtualization Engine (WAVE) appliances.


  o In order to exploit this vulnerability, an attacker would need to be able
    to connect to the NFVIS CLI on an affected device. This would require
    access to one of the following:

       The Ethernet management port for the CPU on an affected ENCS 5400-W
        Series appliance. This interface might be remotely accessible if a
        routed IP is configured.
       The first port on the four-port I350 PCIe Ethernet Adapter card on an
        affected CSP 5000-W Series appliance. This interface might be remotely
        accessible if a routed IP is configured.
       A connection to the vWAAS software CLI and a valid user credential to
        authenticate on the vWAAS CLI first.
       A connection to the Cisco Integrated Management Controller (CIMC)
        interface of the ENCS 5400-W Series or CSP 5000-W Series appliance and
        a valid user credential to authenticate to the CIMC first.


  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/

    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: https://www.cisco.com/c

    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 vWAAS with NFVIS-bundled image
    release 6.4.3e, 6.4.5a, and later releases.

    Note : ENCS 5400-W Series and CSP 5000-W Series appliances do not support a
    direct upgrade to vWAAS 6.4.3e and 6.4.5a releases from earlier releases.
    In order to run a fixed release, customers must do a fresh install with the
    required version of the Cisco WAAS Unified Package for ENCS 5400-W and CSP
    5000-W appliances. Customers are advised to contact their support
    organization for any assistance required with migrating to a fixed release.

    To download the software from the Software Center on Cisco.com , do the

     1. Click Browse all .
     2. Choose Routers > Wan Optimization > Wide Area Application Services
        (WAAS) Software > Wide Area Application Services (WAAS) Software .
     3. Choose a release from the left pane of the Wide Area Application
        Services (WAAS) Software page.
     4. Download the Cisco WAAS Unified Package for ENCS-W and CSP-W Appliances

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.


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

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    | 1.0      | Initial public release.   | -        | Final  | 2020-AUG-19  |

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