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                     Secunia Research 17/11/2011

 - DVR Remote ActiveX Control DVRobot Library Loading Vulnerability -

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Table of Contents

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

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1) Affected Software 

* DVR Remote ActiveX Control (DVRemoteAx.ax) version 2.1.0.39.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in DVR Remote ActiveX 
Control, which can be exploited by malicious people to compromise a 
user's system.

The vulnerability is caused by the ActiveX control during 
instantiation automatically downloading and loading DVRobot.dll from 
the "manifest" folder of the web server invoking the ActiveX control.

Successful exploitation allows execution of arbitrary code via a 
specially crafted web page and hosted DVRobot.dll file.

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4) Solution 

Set the kill-bit for the ActiveX control.

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5) Time Table 

24/10/2011 - Security contact requested.
08/11/2011 - 2nd attempt at contacting vendor.
17/11/2011 - Public disclosure.

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6) Credits 

Discovered by Carsten Eiram, Secunia Research.

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2011-3828 for the vulnerability.

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8) About Secunia

Secunia offers vulnerability management solutions to corporate
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http://secunia.com/advisories/business_solutions/

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9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2011-80/

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

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