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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.2204
     Cisco Enterprise Chat and Email Attachment Download Vulnerability
                               20 June 2019

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

Product:           Cisco Enterprise Chat
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1877  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-ecea-dwnload

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Cisco Enterprise Chat and Email Attachment Download Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-20190619-ecea-dwnload

First Published: 2019 June 19 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds availableCisco Bug IDs:   CSCvo99235

CVE-2019-1877    

CWE-200

CVSS Score:
6.5  AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X

Summary

  o 
    A vulnerability in the HTTP API of Cisco Enterprise Chat and Email could
    allow an unauthenticated, remote attacker to download files attached
    through chat sessions.

    The vulnerability is due to insufficient authentication mechanisms on the
    file download function of the API. An attacker could exploit this
    vulnerability by sending a crafted request to the API. A successful exploit
    could allow the attacker to download files that other users attach through
    the chat feature.

    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-20190619-ecea-dwnload

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco Enterprise Chat and Email.

    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

  o There are no workarounds that address this vulnerability.

Fixed Software

  o 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

  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.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190619-ecea-dwnload

Revision History

  o +---------+---------------------------+---------+--------+---------------+
    | Version |        Description        | Section | Status |     Date      |
    +---------+---------------------------+---------+--------+---------------+
    | 1.0     | Initial public release.   | -       | Final  | 2019-June-19  |
    +---------+---------------------------+---------+--------+---------------+

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