Vulnerability Note VU#475907
ShoreTel Mobility Client mobile application does not verify SSL certificates
Original Release date: 03 Jan 2017 | Last revised: 08 Feb 2017

Overview
ShoreTel Mobility Client for iOS and Android, version 9.1.3.109 and earlier, fails to properly validate SSL certificates provided by HTTPS connections, which may enable an attacker to conduct man-in-the-middle (MITM) attacks.

Description
CWE-295: Improper Certificate Validation – CVE-2016-6562
On iOS and Android devices, the ShoreTel Mobility Client app fails to properly validate SSL certificates provided by HTTPS connections, which means that an attacker in the position to perform MITM attacks may be able to obtain sensitive account information such as login credentials.

Impact
An attacker on the same network as the iOS device may be able to view or modify network traffic that should have been protected by HTTPS, which may lead to the exposure of sensitive account information, including login credentials.

Solution
Apply an update.
ShoreTel has released version 9.1.5.104 for all devices to address the vulnerability.

If you are unable to update your application, please see the following workarounds:
Avoid untrusted networks

Avoid using untrusted networks, including public WiFi. Using your device on an untrusted network increases the chance of falling victim to a MITM attack.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedShoretel Communications, Inc.Affected05 Oct 201621 Dec 2016If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
7.8
AV:A/AC:L/Au:N/C:C/I:C/A:N

Temporal
7.0
E:F/RL:W/RC:C

Environmental
1.8
CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

https://itunes.apple.com/us/app/shoretel-mobility-client/id479054518
https://www.shoretel.com
http://cwe.mitre.org/data/definitions/295.html
http://www.info-sec.ca/advisories/ShoreTel-Mobility.html

Credit

Thanks to David Coomber for reporting this vulnerability.
This document was written by Trent Novelly.

Other Information

CVE IDs:
CVE-2016-6562

Date Public:
03 Jan 2017

Date First Published:
03 Jan 2017

Date Last Updated:
08 Feb 2017

Document Revision:
20

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