ESB-2018.3497 - [Cisco] Cisco Meeting Server: Access confidential data - Remote/unauthenticated 2018-11-08

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3497
         Cisco Meeting Server Information Disclosure Vulnerability
                              8 November 2018

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

Product:           Cisco Meeting Server
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-15446  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-meeting-server

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Priority: Medium
Advisory ID: cisco-sa-20181107-meeting-server
First Published: 2018 November 7 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvk16348
 
CVE-2018-15446
CVSS Score:
Base 5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X

Summary

  * 
    A vulnerability in Cisco Meeting Server could allow an unauthenticated,
    remote attacker to gain access to sensitive information.

    The vulnerability is due to improper protections on data that is returned
    from user meeting requests when the Guest access via ID and passcode option
    is set to Legacy mode. An attacker could exploit this vulnerability by
    sending meeting requests to an affected system. A successful exploit could
    allow the attacker to determine the values of meeting room unique
    identifiers, possibly allowing the attacker to conduct further exploits.

    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-20181107-meeting-server

Affected Products

  * Vulnerable Products

    This vulnerability affects Cisco Meeting Server. For information about
    affected software releases, consult the Cisco bug ID(s) at the top of this
    advisory.

    Products Confirmed Not Vulnerable

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

Workarounds

  * There are no workarounds that address this vulnerability. However,
    customers can use Secure mode for the Guest access via ID and passcode
    option to prevent exploitation of 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 Andrea Marini and Francesco Russo from NTT DATA
    Italia for reporting this vulnerability.

    Cisco would like to thank Yamila Levalle from Innovation and Lab at
    ElevenPaths, the Cybersecurity Unit of Telefonica, for independently
    reporting this vulnerability.

URL

  * https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-meeting-server

Revision History

  * 
    +----------------------------------------------------------------------------+
    | Version |        Description        | Section | Status |       Date        |
    |---------+---------------------------+---------+--------+-------------------|
    | 1.0     | Initial public release.   | -       | Final  | 2018-November-07  |
    +----------------------------------------------------------------------------+

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