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AUSCERT External Security Bulletin Redistribution
ESB-2015.2501
Cisco Spark Mobile Application Man-in-the-Middle Vulnerability
25 September 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Spark Mobile Application
Publisher: Cisco Systems
Operating System: Mobile Device
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-6303
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=41127
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Vulnerability Alert
Cisco Spark Mobile Application Man-in-the-Middle Vulnerability
Threat Type: CWE-200: Information Leak / Disclosure
IntelliShield ID: 41127
Version: 1
First Published: 2015 September 22 14:01 GMT
Last Published: 2015 September 22 14:01 GMT
Port: Not available
CVE: CVE-2015-6303
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 5.0
CVSS Temporal: 4.8
Version Summary: Cisco Spark contains a vulnerability that could allow an
unauthenticated, remote attacker to conduct a man-in-the-middle attack against
a targeted device. Updates are not available.
Description
A vulnerability in the Cisco Spark mobile application could allow an
unauthenticated, remote attacker to perform a man-in-the-middle attack against
the affected device.
The vulnerability is due to improper validation of the SSL certificate used to
manage the device. An attacker could exploit this vulnerability by using the
default SSL certificate to view sensitive information.
Cisco has confirmed the vulnerability; however, software updates are not
available.
Warning Indicators
Cisco Spark release 2015-07-04 is affected.
IntelliShield Analysis
Although a successful exploit could be used by an attacker to view sensitive
information on a targeted device, the attacker may use the information
gathered to conduct further attacks against the device.
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 IDs CSCut36742 and CSCut36844 for registered users,
which contains additional details and an up-to-date list of affected product
versions.
Impact
An unauthenticated, remote attacker could exploit this vulnerability to
perform man-in-the-middle attacks against an affected device. A successful
exploit could be used to gain access to sensitive information which could be
leveraged to conduct further attacks.
Technical Information
The vulnerability is due to improper validation of the SSL certificate by an
affected device.
An unauthenticated, remote attacker could exploit this vulnerability by using
the default SSL certificate to perform a man-in-the-middle attack to view
sensitive information. A successful exploit could be leveraged to conduct
further attacks.
Safeguards
Administrators are advised to contact the vendor regarding future updates and
releases.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Patches/Software
Software updates are not available.
Alert History
Initial Release
Product Sets
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco Cisco Spark 2015-07-04 Base
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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