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             AUSCERT External Security Bulletin Redistribution

 Cisco BroadWorks Application Server Information Disclosure Vulnerability
                                8 July 2021


        AusCERT Security Bulletin Summary

Product:           Cisco BroadWorks Application Server
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-1562  

Original Bulletin: 

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Cisco BroadWorks Application Server Information Disclosure Vulnerability

Priority:        Medium
Advisory ID:     cisco-sa-broad-as-inf-disc-ZUXGFFXQ
First Published: 2021 July 7 16:00 GMT
Version 1.0:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvv41798
CVE Names:       CVE-2021-1562
CWEs:            CWE-200


  o A vulnerability in the XSI-Actions interface of Cisco BroadWorks
    Application Server could allow an authenticated, remote attacker to access
    sensitive information on an affected system.

    This vulnerability is due to improper input validation and authorization of
    specific commands that a user can execute within the XSI-Actions interface.
    An attacker could exploit this vulnerability by authenticating to an
    affected device and issuing a specific set of commands. A successful
    exploit could allow the attacker to join a Call Center instance and have
    calls that they do not have permissions to access distributed to them from
    the Call Center queue.

    At the time of publication, Cisco had not released updates that address
    this vulnerability for Cisco BroadWorks Application Server. However,
    firmware patches are available. There are no workarounds that address this

    This advisory is available at the following link:

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco BroadWorks
    Application Server.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory. See the Details section in the bug
    ID(s) at the top of this advisory for the most complete and current

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.


  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories 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

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    At the time of publication, Cisco had not released updates that address
    this vulnerability for Cisco BroadWorks Application Server. However,
    firmware patches are available.

    The left column lists Cisco software releases that are affected by the
    vulnerability described in this advisory, and the right column indicates
    whether a firmware patch is available.

    Cisco BroadWorks Application Server Release              Firmware Patch
    17.0                                                     None planned
    18.0                                                     None planned
    19.0                                                     None planned
    20.0                                                     None planned
    21.0                                                     None planned
    22.0                                                     22.0.2020.08
    23.0                                                     23.0.2020.08
    24.0                                                     24.0.2020.08

    To download a firmware patch from the Software Center on Cisco.com, do the

     1. Click Browse all .
     2. Choose Unified Communications > Cloud Calling > BroadWorks > BroadWorks
        Application Server [version number] .
     3. Choose Application Patches > [version number] > [patch number] .
     4. Choose the appropriate firmware patch from the list of downloads.

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 the resolution of a Cisco TAC support

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/cisco-sa-broad-as-inf-disc-ZUXGFFXQ

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    | 1.0      | Initial public release.   | -        | Final  | 2021-JUL-07  |

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