ESB-2017.2053 - [Appliance][Virtual] Cisco Unified Communications Manager: Access confidential data - Existing account 2017-08-17

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2053
         Cisco Unified Communications Manager Horizontal Privilege
                         Escalation Vulnerability
                              17 August 2017

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

Product:           Cisco Unified Communications Manager
Publisher:         Cisco Systems
Operating System:  Network Appliance
                   Virtualisation
Impact/Access:     Access Confidential Data -- Existing Account
                   Unauthorised Access      -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6785  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816-ucm

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Cisco Unified Communications Manager Horizontal Privilege Escalation Vulnerability

Medium

Advisory ID: cisco-sa-20170816-ucm

First Published: 2017 August 16 16:00  GMT

Version 1.0: Final
Workarounds: No workarounds available

Cisco Bug IDs: CSCve27331

CVSS Score: Base 4.3, Temporal 4.3

CVE-2017-6785
CWE-20

Summary

A vulnerability in configuration modification permissions validation for
Cisco Unified Communications Manager could allow an authenticated, remote
attacker to perform a horizontal privilege escalation where one user can
modify another user's configuration.

The vulnerability is due to lack of proper Role Based Access Control
(RBAC) when certain user configuration changes are requested. An attacker
could exploit this vulnerability by sending an authenticated, crafted HTTP
request to the targeted application. An exploit could allow the attacker
to impact the integrity of the application where one user can modify the
configuration of another user's information.

Workarounds that address this vulnerability are not available.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816-ucm

Affected Products

Vulnerable Products

This vulnerability affects Cisco Unified Communications Manager. For
information about affected software releases, consult the Cisco bug ID 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

This vulnerability was found during resolution of a Cisco TAC Support case.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816-ucm

Revision History

Version		Description		Section		Status	Date
1.0		Initial public release.	--		Final	2017-August-16

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.

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