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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.2121
         Cisco TelePresence Video Communication Server Expressway
                   Information Disclosure Vulnerability
                              14 August 2015

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

Product:           Cisco TelePresence Video Communication Server Expressway
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-4320  

Original Bulletin: 
   http://tools.cisco.com/security/center/viewAlert.x?alertId=40441

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Vulnerability Alert

Cisco TelePresence Video Communication Server Expressway Information 
Disclosure Vulnerability

Threat Type: CWE-200: Information Leak / Disclosure

IntelliShield ID: 40441

Version: 1

First Published: 2015 August 13 20:14 GMT

Last Published: 2015 August 13 20:14 GMT

Port: Not available

CVE: CVE-2015-4320

Urgency: Unlikely Use

Credibility: Confirmed

Severity: Harassment

CVSS Base: 4.0

CVSS Version 2.0

CVSS Temporal: 3.3

Version Summary: Cisco TelePresence Video Communication Server Expressway 
contains a vulnerability that could allow an authenticated, remote attacker to
access sensitive information on a targeted device. Updates are available.

Description

A vulnerability in Configuration Log File of the Cisco TelePresence Video 
Communication Server (VCS) Expressway could allow an authenticated, remote 
attacker to obtain sensitive information stored on an affected system.

The vulnerability is due to the inclusion of sensitive information in certain
log files. An attacker could exploit this vulnerability by viewing the 
sensitive information in the vulnerable log files.

Cisco has confirmed the vulnerability and released software updates.

Warning Indicators

At the time this alert was first published, Cisco VCS Expressway version 
X8.5.2 was vulnerable. Later releases of Cisco VCS Expressway may also be 
vulnerable.

IntelliShield Analysis

To exploit this vulnerability, an attacker must authenticate to the targeted 
device. This access requirement reduces the likelihood of a successful 
exploit.

Cisco indicates through the CVSS score that functional exploit code exists; 
however, the code is not known to be publicly available.

Vendor Announcements

Cisco has released bug ID CSCuv12340 for registered users, which contains 
additional details and an up-to-date list of affected product versions.

Impact

An authenticated, remote attacker could exploit this vulnerability to gain 
access to sensitive information in certain log files. A successful exploit 
could be leveraged to conduct further attacks.

Technical Information

The vulnerability is due to improper logging of password hashes in the 
Configuration Log File of the affected software when passwords are changed 
through the web interface.

An authenticated, remote attacker could exploit this vulnerability to view 
sensitive information in the vulnerable log files stored on a targeted system.
A successful exploit could be leveraged to conduct further attacks.

Safeguards

Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to allow only privileged users to access 
administration or management systems.

Administrators are advised to monitor affected systems.

Patches/Software

Cisco customers with active contracts can obtain updates through the Software
Center at the following link: Cisco. Cisco customers without contracts can 
obtain upgrades by contacting the Cisco Technical Assistance Center at 
1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com.

Alert History

Initial Release

Product Sets

The security vulnerability applies to the following combinations of products.

Primary Products:

Cisco Cisco TelePresence Video Communication Server (VCS) Expressway X8.5 .2

Associated Products:

N/A

LEGAL DISCLAIMER

The urgency and severity ratings of this alert are not tailored to individual
users; users may value alerts differently based upon their network 
configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED 
THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF 
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED 
THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION
IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE
TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES 
THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.

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