ACT P202S VoIP wireless phone multiple undocumented ports/services

[Shawn Merdinger <shawnmer () gmail com>]

I disclosed the following issues at ShmooCon 2006
<http://www.shmoocon.org/> during my "VoIP Wireless Phone Security
Analysis" presentation.

Thanks,
--scm

===============================================================

DATE:
16 January, 2006

VENDOR:
ACT – Advantage Century Telecommunication Corporation

VENDOR NOTIFIED:
19 October, 2005

PRODUCT:
ACT P202S VoIP wireless phone
http://www.act-tel.com.tw/_pg/products/productItem.asp?productKey=54
Firmware Version:
1.1.21on VxWorks

VULNERABILITY TITLE:
ACT P202S VoIP wireless phone multiple undocumented ports/services

DETAILS, IMPACT AND WORKAROUND:
The ACT P202S VoIP 802.11b wireless phone, version 1.01.21 on VxWorks
has three undocumented ports and extraneous services that can be
exploited by attackers.

1. Undocumented port, UDP/17185 VxWorks WDB remote debugging (wdbrpc)
2. Undocumented port, TCP/7 echo
3. Undocumented port, TCP/513 rlogin
4. Hardcoded NTP server

1. Undocumented port, UDP/17185 may allows direct access to phone
memory and OS internals.
2. Undocumented port, TCP/7 may allow attacker to reflect sent network
data using the echo service, potential causing impact to phone
operation or utilized in DoS of other network devices.
3. Undocumented port, TCP/513 allows an attacker rlogin access with no
credentials.
4. The phone configuration has a hardcoded Taiwan NTP server

CONTACT INFORMATION:
Shawn Merdinger
shawnmer () gmail com

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