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Secunia Research: Garmin Communicator Plug-In Domain Locking Security Bypass

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                     Secunia Research 07/05/2009

    - Garmin Communicator Plug-In Domain Locking Security Bypass -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

Garmin Communicator Plug-In (npGarmin.dll) version 2.6.4.0.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Less critical
Impact: Security bypass
Where:  From Remote

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3) Vendor's Description of Software 

"The Garmin Communicator Plugin lets you connect your Garmin GPS with
your favorite website. Once the plugin is installed, just connect your
Garmin GPS device to your computer, and you're on your way. The Garmin
Communicator can send and retrieve data from any supported website.".

Product Link:
http://www8.garmin.com/products/communicator/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Garmin Communicator
Plug-In, which can be exploited by malicious people to bypass certain
security restrictions.

The vulnerability is caused due to a synchronisation error in the 
GARMINAXCONTROL.GarminAxControl_t.1 ActiveX control (npGarmin.dll).
This can be exploited to bypass the domain locking and dialog box 
presented to the user asking for confirmation that the untrusted site
may access private data.

Successful exploitation allows full access (such as deleting data,
retrieving personal information, or installing firmware updates) to 
any Garmin GPS products connected to the user's system.

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5) Solution 

Set the kill-bit for the affected ActiveX control.

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6) Time Table 

19/03/2009 - Vendor contacted via web form asking for contact details
             of security contact.
24/03/2009 - No response from the vendor. Vendor contacted again using
             various support e-mail addresses.
07/05/2009 - Public disclosure.

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7) Credits 

Discovered by Dyon Balding, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2009-0194 for the vulnerability.

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9) About Secunia

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Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
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Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-16/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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