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UTStarcom's iAN-02EX Remote Access Vulnerability
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SUMMARY
" <http://www.utstar.com/Solutions/CPE/VoIP_CPE/> UTStarcom's iAN-02EX is
a VoIP Analog Terminal Adaptor (ATA) that enables the interconnection of
legacy analog phones/faxes to broadband networks. It is designed for
networks served by a variety of Call Agents and UTStarcom's state of the
art mSwitch Soft switch platform. The iAN-02EX allows customers to realize
next-generation, standards-based Voice-over-IP (VoIP) communications
without replacing their existing phone equipment."
By using the default password, a remote attacker may access the device
from public network and may cause a denial of service for voice and/or
data traffic. In addition, an attacker may also use this to gain access to
a customers speed-dial list and modify that list, access other areas of
the LAN behind the ATA or change the default password of device preventing
it from future use.
DETAILS
The UTStarcom iAN-02EX is a VoIP ATA currently being used by Lingo and
probably other VoIP providers. This advisory is specific to the
configuration of the iAN-02EX device as currently shipped by Lingo, and
may or may not apply to other configurations of the device. The default
configuration leaves the ATA vulnerable to unauthorized remote access.
Using the default password, a remote attacker may access the device via
the WAN port. This problem is compounded by Lingo's recommendation that
the device should be placed between a broadband modem and router
("recommended method"). This configuration makes the ATA's WAN port
accessible from the public Internet.
Workaround:
This vulnerability can be mitigated by not allowing login access via WAN.
At the very least this feature should be disabled by default. Ideally
access via the WAN port should require that the default password is
changed.
ADDITIONAL INFORMATION
The information has been provided by <mailto:atom@smasher.org> Atom
Smasher.
References regading Lingo VoIP ATA/UTStarcom's iAN-02EX:
* <http://www.utstar.com/Solutions/CPE/VoIP_CPE/>
http://www.utstar.com/Solutions/CPE/VoIP_CPE/
*
<http://www.utstar.com/Solutions/Document_Library/CPE/docs/SS_UTiAN02EX.pdf>
http://www.utstar.com/Solutions/Document_Library/CPE/docs/SS_UTiAN02EX.pdf
* <http://www.lingosupport.com/> http://www.lingosupport.com/
* <http://www.lingosupport.com/install_multi_01.html>
http://www.lingosupport.com/install_multi_01.html
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