ESB-2017.1105.2 - UPDATE [Cisco] Cisco CallManager Express: Unauthorised access - Remote/unauthenticated 2018-07-26

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2017.1105.2
        Cisco CallManager Express Unauthorized Access Vulnerability
                               26 July 2018

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

Product:           Cisco CallManager Express
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6624  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-cme1

Revision History:  July 26 2018: Vendor updated bulletin with new defect.
                   May   4 2017: Initial Release

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

Cisco CallManager Express Unauthorized Access Vulnerability

Medium

Advisory ID: cisco-sa-20170503-cme1

First Published: 2017 May 3 16:00 GMT

Last Updated: 2018 July 25 15:33 GMT

Version 1.2: Final

Workarounds: No workarounds available

Cisco Bug IDs:
CSCuy40939
CSCvk48070
 
CVE-2017-6624
CVSS Score: Base 5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:X/RC:X
 
Summary

    A vulnerability in Cisco IOS Software for Cisco CallManager Express (CME)
    could allow an unauthenticated, remote attacker to make unauthorized phone
    calls.

    The vulnerability is due to a configuration restriction in the toll-fraud
    protections component of the affected software. An attacker could exploit
    this vulnerability to place unauthorized, long-distance phone calls by
    using an affected system.

    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-20170503-cme1

Affected Products

    Vulnerable Products

    This vulnerability affects Cisco IOS Software for Cisco CallManager
    Express. For information about affected software releases, consult the
    Cisco bug ID(s) at the top of this advisory.

    Products Confirmed Not Vulnerable

    No other Cisco products are currently known to be affected by this
    vulnerability.

Workarounds

    There are no workarounds that address this vulnerability.

Fixed Software

    For information about fixed software releases, consult the Cisco bug ID(s)
    at the top of this advisory.

    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.

Exploitation and Public Announcements

    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

    Cisco would like to thank Paolo Bevilacqua for finding and reporting this
    vulnerability.

Cisco Security Vulnerability Policy

    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

    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20170503-cme1

Revision History

    
    +-----------------------------------------------------------------------------+
    | Version |           Description           | Section | Status |     Date     |
    |---------+---------------------------------+---------+--------+--------------|
    | 1.2     | Added new defect.               | Summary | Final  | 2018-July-25 |
    |---------+---------------------------------+---------+--------+--------------|
    |         | Added acknowledgement and       |         |        |              |
    | 1.1     | thanks to the researcher who    | Source  | Final  | 2017-May-24  |
    |         | found the vulnerability.        |         |        |              |
    |---------+---------------------------------+---------+--------+--------------|
    | 1.0     | Initial public release.         | ?       | Final  | 2017-May-03  |
    +-----------------------------------------------------------------------------+

Legal Disclaimer

    THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
    OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
    FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
    OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
    THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

    A standalone copy or paraphrase of the text of this document that omits the
    distribution URL is an uncontrolled copy and may lack important information
    or contain factual errors. The information in this document is intended for
    end users of Cisco products.

- --------------------------END INCLUDED TEXT--------------------

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