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WIDCOMM Bluetooth Connectivity Software Buffer Overflows
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SUMMARY
WIDCOMM's products provides a full range of Bluetooth connectivity
solutions for PCs, PDAs, mobile phones, headsets, digital cameras, access
points, and various output devices.
An unauthenticated remote attacker can submit various malformed service
requests via Bluetooth, triggering a buffer overflow and executing
arbitrary code on the vulnerable device.
On Windows platforms this allows arbitrary code execution under the
context of the currently logged on user account.
DETAILS
Vulnerable Systems:
* BTStackServer version 1.3.2.7
* BTStackServer version 1.4.2.10
* BTStackServer version 1.4.1.03
WIDCOMM supply their Bluetooth Communications software to other companies
to allow them to integrate Bluetooth technology into their devices. They
also supply Bluetooth SDK's to enable developers to create applications
that use Bluetooth. Therefore it may not be immediately apparent that you
are using the WIDCOMM Bluetooth software and version numbers may vary.
<http://www.widcomm.com/Partners/index.asp> WIDCOMM's website reports the
following companies as customers or partners with WIDCOMM:
Logitech Samsung Electro-Mechanics Sony Texas Instruments Compaq Computer
Corporation Dell National Semiconductor Matsushita Electric Industrial
Co., Ltd. Wistron NeWeb Corporation TDK Systems Europe Zeevo Cambridge
Silicon Radio Billionton Broadcom Corporation LG Innotek MSI Fujitsu
Siemens Computers Philips Silicon Wave Seiko Instruments Inc. TECOM
Plantronics Mobilian Fujitsu Media Devices Limited OKI Electric Industry
Co. Ltd. FIC Costar Brother Alcatel Atmel Conexant Systems, Inc. Microtune
OSK
Pentest Limited has tested for the reported vulnerabilities against
BTStackServer version 1.3.2.7 and 1.4.2.10 on both Windows XP and Windows
98 that ships with MSI Bluetooth Dongles. We have also tested this against
an HP IPAQ 5450 running WinCE 3.0 with Bluetooth software version
1.4.1.03.
Whilst the above platforms are the only platforms tested and confirmed to
be exploitable by Pentest Limited, discussions with the vendor lead us to
believe that are all versions prior to version BTW & BT-CE/PPC 3.0 are
affected by this vulnerability.
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0775>
CAN-2004-0775
Vendor Status:
14-11-2003 - Initial Pentest Limited Notification
14-11-2003 - Notification acknowledged by WIDCOMM, request more detail
20-11-2003 - Pentest notify WIDCOMM of another vulnerability
06-01-2004 - Pentest send chase up Email without reply
13-01-2004 - Another email
13-01-2004 - WIDCOMM reply saying they are still working on it
21-01-2004 - Pentest email WIDCOMM that they have written a POC exploit
23-01-2004 - WIDCOMM reply saying they have resolved issue and fix will be
available in next release
10-02-2004 - Pentest ask for an update on expected release date
11-02-2004 - WIDCOMM plan February/early March release date
29-03-2004 - Pentest ask for update
12-05-2004 - Pentest ask for update
12-07-2004 - Pentest send chase up Email without reply
26-07-2004 - Pentest ask whether a patch will be released for older
versions
03-08-2004 - WIDCOMM respond. No date set for new release and no patch
will be made available for older versions.
Fix:
Until version 3 of the WIDCOMM software becomes available from WIDCOMM or
their customers/partners Pentest Limited recommend that end users stop
using the vulnerable WIDCOMM Bluetooth software or set their Bluetooth
device configuration to be non-discoverable or hidden. This will not stop
the device from being vulnerable but it may limit the exposure.
ADDITIONAL INFORMATION
The information has been provided by Mark Rowe and Matt Moore.
The original article can be found at:
<http://www.pentest.co.uk/documents/ptl-2004-03.html>
http://www.pentest.co.uk/documents/ptl-2004-03.html
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