ESB-2018.1702 - [Cisco] Multiple Cisco Products: Denial of service - Remote/unauthenticated 2018-06-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1702
 Multiple Cisco Products Disk Utilization Denial of Service Vulnerability
                                7 June 2018

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

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

Product:           Multiple Cisco Products
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6779  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos

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

Multiple Cisco Products Disk Utilization Denial of Service Vulnerability

High
Advisory ID: cisco-sa-20180606-diskdos
First Published: 2018 June 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvd10872
               CSCvf64322
               CSCvf64332
               CSCvi29538
               CSCvi29543
               CSCvi29544
               CSCvi29546
               CSCvi29556
               CSCvi29571
               CSCvi31738
               CSCvi31741
               CSCvi31762
               CSCvi31807
               CSCvi31818
               CSCvi31823

CVSS Score: Base 8.6
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
CVE-2017-6779
CWE-399

Summary

  o Multiple Cisco products are affected by a vulnerability in local file
    management for certain system log files of Cisco collaboration products
    that could allow an unauthenticated, remote attacker to cause high disk
    utilization, resulting in a denial of service (DoS) condition.

    The vulnerability occurs because a certain system log file does not have a
    maximum size restriction. Therefore, the file is allowed to consume the
    majority of available disk space on the appliance. An attacker could
    exploit this vulnerability by sending crafted remote connection requests to
    the appliance. Successful exploitation could allow the attacker to increase
    the size of a system log file so that it consumes most of the disk space.
    The lack of available disk space could lead to a DoS condition in which the
    application functions could operate abnormally, making the appliance
    unstable.

    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-20180606-diskdos

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco Voice Operating System (VOS)
    -based products:

      o Emergency Responder
      o Finesse
      o Hosted Collaboration Mediation Fulfillment
      o MediaSense
      o Prime License Manager
      o SocialMiner
      o Unified Communications Manager (UCM)
      o Unified Communications Manager IM and Presence Service (IM&P); earlier
        releases were known as Cisco Unified Presence
      o Unified Communication Manager Session Management Edition (SME)
      o Unified Contact Center Express (UCCx)
      o Unified Intelligence Center (UIC)
      o Unity Connection
      o Virtualized Voice Browser

    This vulnerability also affects the following Cisco products:

      o Prime Collaboration Assurance
      o Prime Collaboration Provisioning

    Determining the Current Software Release from the CLI

    To determine which software release is running on a platform,
    administrators can issue the show version active command in the CLI.

    In the following example, the software release is 11.5.1.10000-86:

        ciscocm: show version active
        Active Master Version: 11.5.1.10000-86

    Determining the Current Software Release for the Cisco Unified or Contact
    Center Platform

    Administrators can use the UI to determine which Cisco product software
    release is running:

     1. Log in to the web-based interface
     2. Choose Help > About to view the system software release

    Administrators can use the UI to determine which Cisco Contact Center
    platform-based product software release is running:

     1. Log in to the Cisco Contact Center Express server
     2. Go to the Cisco Unified Communications operating system administration
        window
     3. Choose Show > Software

    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 products:
      o Identity Service (IdS) 11.5 and 11.6
      o Prime Collaboration Deployment

Indicators of Compromise

  o Exploitation of this vulnerability could cause the user to observe the
    following error in device logs:

        ./hssi_defines.sh: line ###: echo: write error: No space left on device

    Administrators who observe this error are advised to contact the Cisco
    Technical Assistance Center (TAC) to determine whether the device has been
    compromised by exploitation of this vulnerability.

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

    Emergency Responder: CSCvf64322

    The Emergency Responder Software can be downloaded from the Software Center
    on Cisco.com by navigating to Products > Unified Communications > Telephony
    Extensions > Emergency Responder.

    +-----------------------------+-------------------------------------------+
    | Emergency Responder Release | First Fixed Release for This              |
    |                             | Vulnerability                             |
    +-----------------------------+-------------------------------------------+
    | Prior to 10.5               | Vulnerable; migrate to 10.5(1a)           |
    +-----------------------------+-------------------------------------------+
    | 10.5                        | 10.5(1a) (future release)^1               |
    +-----------------------------+-------------------------------------------+
    | 11.0                        | Vulnerable; migrate to 11.5(4)            |
    +-----------------------------+-------------------------------------------+
    | 11.5                        | 11.5(4)                                   |
    +-----------------------------+-------------------------------------------+
    | 12.0                        | 12.0SU1                                   |
    +-----------------------------+-------------------------------------------+

    ^1The COP file ciscocm.cer_CSCvf64322.cop.sgn is available from the
    Software Center on Cisco.com.

    Finesse: CSCvi29556

    The Finesse Software can be downloaded from the Software Center on
    Cisco.com by navigating to Products > Customer Collaboration > Options for
    Contact Center Solutions > Finesse > Finesse Software.

    +--------------------+----------------------------------------------------+
    | Finesse Release    | First Fixed Release for This Vulnerability         |
    +--------------------+----------------------------------------------------+
    | Prior to 11.6      | Vulnerable; migrate to 11.6(1)                     |
    +--------------------+----------------------------------------------------+
    | 11.6               | 11.6(1)                                            |
    +--------------------+----------------------------------------------------+

    Hosted Collaboration Mediation Fulfillment: CSCvi31738

    The Hosted Collaboration Mediation Fulfillment Software can be downloaded
    from the Software Center on Cisco.com by navigating to Products > Unified
    Communications > Call Control > Hosted Collaboration > Hosted Collaboration
    Solution (HCS).

    +---------------------------------------+---------------------------------+
    | Hosted Collaboration Mediation        | First Fixed Release for This    |
    | Fulfillment Release                   | Vulnerability                   |
    +---------------------------------------+---------------------------------+
    | Prior to 11.5                         | Vulnerable; migrate to 11.5(3)  |
    +---------------------------------------+---------------------------------+
    | 11.5                                  | 11.5(3)                         |
    +---------------------------------------+---------------------------------+

    MediaSense: CSCvi29546

    The MediaSense Software can be downloaded from the Software Center on
    Cisco.com by navigating to Products > Customer Collaboration > Options for
    Contact Center Solutions > MediaSense > MediaSense Software.

    +----------------------+--------------------------------------------------+
    | MediaSense Release   | First Fixed Release for This Vulnerability       |
    +----------------------+--------------------------------------------------+
    | Prior to 11.5        | Vulnerable; migrate to 11.5SU2                   |
    +----------------------+--------------------------------------------------+
    | 11.5                 | 11.5SU2                                          |
    +----------------------+--------------------------------------------------+

    Prime Collaboration Assurance: CSCvi31818

    The Prime Collaboration Assurance Software can be downloaded from the
    Software Center on Cisco.com by navigating to Products > Cloud and Systems
    Management > Collaboration and Unified Communications Management > Prime
    Collaboration.

    +---------------------------------+---------------------------------------+
    | Prime Collaboration Assurance   | First Fixed Release for This          |
    | Release                         | Vulnerability                         |
    +---------------------------------+---------------------------------------+
    | Prior to 11.6                   | Vulnerable; migrate to 11.6 ES16      |
    +---------------------------------+---------------------------------------+
    | 11.6                            | 11.6 ES16                             |
    +---------------------------------+---------------------------------------+
    | 12.1                            | 12.1 ES2                              |
    +---------------------------------+---------------------------------------+

    Prime Collaboration Provisioning: CSCvi31741

    The Prime Collaboration Provisioning Software can be downloaded from the
    Software Center on Cisco.com by navigating to Products > Cloud and Systems
    Management > Collaboration and Unified Communications Management > Prime
    Collaboration.

    +-----------------------------------+-------------------------------------+
    | Prime Collaboration Provisioning  | First Fixed Release for This        |
    | Release                           | Vulnerability                       |
    +-----------------------------------+-------------------------------------+
    | Prior to 12.5                     | Vulnerable; migrate to 12.5         |
    +-----------------------------------+-------------------------------------+
    | 12.5                              | 12.5                                |
    +-----------------------------------+-------------------------------------+

    Prime License Manager: CSCvi31807

    The Prime License Manager Software can be downloaded from the Software
    Center on Cisco.com by navigating to Products > Unified Communications >
    Unified Communications Management > Prime License Manager > Prime License
    Manager Software Updates.

    +--------------------------+----------------------------------------------+
    | Prime License Manager    | First Fixed Release for This Vulnerability   |
    | Release                  |                                              |
    +--------------------------+----------------------------------------------+
    | Prior to 10.5            | Vulnerable; migrate to plm_10_5_2 -          |
    |                          | 10.5.2.13001-1^1                             |
    +--------------------------+----------------------------------------------+
    | 10.5                     | plm_10_5_2 - 10.5.2.13001-1                  |
    +--------------------------+----------------------------------------------+
    | 11.0                     | Vulnerable; migrate to plm_11_5_1 -          |
    |                          | 11.5.1.13001-1^1                             |
    +--------------------------+----------------------------------------------+
    | 11.5                     | plm_11_5_1 - 11.5.1.13001-1                  |
    +--------------------------+----------------------------------------------+

    ^1These Engineering Specials (ES) must be requested via the Cisco TAC.

    SocialMiner: CSCvi29544

    The SocialMiner Software can be downloaded from the Software Center on
    Cisco.com by navigating to Products > Customer Collaboration > Options for
    Contact Center Solutions > SocialMiner > SocialMiner Software.

    +-----------------------+-------------------------------------------------+
    | SocialMiner Release   | First Fixed Release for This Vulnerability      |
    +-----------------------+-------------------------------------------------+
    | Prior to 11.6         | Vulnerable; migrate to 11.6.1                   |
    +-----------------------+-------------------------------------------------+
    | 11.6                  | 11.6.1                                          |
    +-----------------------+-------------------------------------------------+

    Unified Communications Manager and Unified Communication Manager Session
    Management Edition: CSCvd10872

    The Unified Communications Manager Software can be downloaded from the
    Software Center on Cisco.com by navigating to Products > Unified
    Communications > Call Control > Unified Communications Manager
    (CallManager).

    +----------------------------------+--------------------------------------+
    | Unified Communications Manager   | First Fixed Release for This         |
    | Release                          | Vulnerability                        |
    +----------------------------------+--------------------------------------+
    | Prior to 10.0                    | Vulnerable; migrate to 10.5(2)SU5 or |
    |                                  | later                                |
    +----------------------------------+--------------------------------------+
    | 10.0                             | Vulnerable; migrate to 10.5(2)SU5 or |
    |                                  | later                                |
    +----------------------------------+--------------------------------------+
    | 10.5                             | 10.5(2)SU5                           |
    +----------------------------------+--------------------------------------+
    | 11.0                             | 11.0(1a)SU4                          |
    +----------------------------------+--------------------------------------+
    | 11.5                             | 11.5(1)SU3                           |
    +----------------------------------+--------------------------------------+
    | 12.0                             | Not vulnerable                       |
    +----------------------------------+--------------------------------------+

    Unified Communications Manager IM and Presence Service: CSCvi29543

    The Unified Communications Manager IM and Presence Service Software can be
    downloaded from the Software Center on Cisco.com by navigating to Products
    > Unified Communications > Unified Communications Applications > Presence
    Software > Unified Communications Manager IM & Presence Service.

    +------------------------------------------+------------------------------+
    | Unified Communications Manager IM and    | First Fixed Release for This |
    | Presence Service Release                 | Vulnerability                |
    +------------------------------------------+------------------------------+
    | Prior to 10.5                            | Vulnerable; migrate to       |
    |                                          | 10.5.2 SU4                   |
    +------------------------------------------+------------------------------+
    | 10.5                                     | 10.5.2SU4                    |
    +------------------------------------------+------------------------------+
    | 11.0                                     | Vulnerable; migrate to 11.5  |
    |                                          | (1)SU4                       |
    +------------------------------------------+------------------------------+
    | 11.5                                     | 11.5(1)SU4                   |
    +------------------------------------------+------------------------------+

    Unified Contact Center Express: CSCvi29538

    The Unified Contact Center Express Software can be downloaded from the
    Software Center on Cisco.com by navigating to Products > Customer
    Collaboration > Options for Contact Center Solutions > Unified IP
    Interactive Voice Response (IVR).

    +----------------------------------+--------------------------------------+
    | Unified Contact Center Express   | First Fixed Release for This         |
    | Release                          | Vulnerability                        |
    +----------------------------------+--------------------------------------+
    | Prior to 11.6                    | Vulnerable; migrate to 11.6(1)       |
    +----------------------------------+--------------------------------------+
    | 11.6                             | 11.6(1)                              |
    +----------------------------------+--------------------------------------+

    Unified Intelligence Center: CSCvi29571

    The Unified Intelligence Center Software can be downloaded from the
    Software Center on Cisco.com by navigating to Products > Customer
    Collaboration > Options for Contact Center Solutions > Unified Intelligence
    Center > Unified Intelligence Center Software.

    +---------------------------------+---------------------------------------+
    | Unified Intelligence Center     | First Fixed Release for This          |
    | Release                         | Vulnerability                         |
    +---------------------------------+---------------------------------------+
    | Prior to 11.6                   | Vulnerable; migrate to 11(6).1        |
    +---------------------------------+---------------------------------------+
    | 11.6                            | 11.6(1)                               |
    +---------------------------------+---------------------------------------+

    Unity Connection: CSCvf64332

    The Unity Connection Software can be downloaded from the Software Center on
    Cisco.com by navigating to Products > Unified Communications > Unified
    Communications Applications > Messaging > Unity Connection.

    +--------------------------+----------------------------------------------+
    | Unity Connection Release | First Fixed Release for This Vulnerability   |
    +--------------------------+----------------------------------------------+
    | Prior to 10.5            | Vulnerable; migrate to 10.5SU5               |
    +--------------------------+----------------------------------------------+
    | 10.5                     | 10.5SU5                                      |
    +--------------------------+----------------------------------------------+
    | 11.0                     | Vulnerable; migrate to 11.5(1)SU3            |
    +--------------------------+----------------------------------------------+
    | 11.5                     | 11.5.1SU3                                    |
    +--------------------------+----------------------------------------------+
    | 12.0                     | Not vulnerable                               |
    +--------------------------+----------------------------------------------+

    Virtualized Voice Browser: CSCvi31823

    The Virtualized Voice Browser Software can be downloaded from the Software
    Center on Cisco.com by navigating to Products > Customer Collaboration >
    Options for Contact Center Solutions > Virtualized Voice Browser.

    +--------------------------------+----------------------------------------+
    | Virtualized Voice Browser      | First Fixed Release for This           |
    | Release                        | Vulnerability                          |
    +--------------------------------+----------------------------------------+
    | Prior to 11.6                  | Vulnerable; migrate to 11.6(1)         |
    +--------------------------------+----------------------------------------+
    | 11.6                           | 11.6(1)                                |
    +--------------------------------+----------------------------------------+

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 the resolution of a Cisco TAC support
    case.

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.

Subscribe to Cisco Security Notifications

  o Subscribe

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos

Revision History

  o +---------+---------------------------+---------+--------+---------------+
    | Version |        Description        | Section | Status |     Date      |
    +---------+---------------------------+---------+--------+---------------+
    | 1.0     | Initial public release.   | --      | Final  | 2018-June-06  |
    +---------+---------------------------+---------+--------+---------------+

Legal Disclaimer

  o 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.

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