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DVR Remote ActiveX Control DVRobot Library Loading

DVR Remote ActiveX Control DVRobot Library Loading
Posted Nov 17, 2011
Authored by Carsten Eiram | Site secunia.com

Secunia Research has discovered a vulnerability in DVR Remote ActiveX Control version 2.1.0.39, 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.

tags | advisory, remote, web, arbitrary, activex
advisories | CVE-2011-3828
SHA-256 | e641c5041e65c7dcb486319e4f9f229021c6007e19079a2a67952f9abfd2a4b8

DVR Remote ActiveX Control DVRobot Library Loading

Change Mirror Download
====================================================================== 

Secunia Research 17/11/2011

- DVR Remote ActiveX Control DVRobot Library Loading Vulnerability -

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

======================================================================
1) Affected Software

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

NOTE: Other versions may also be affected.

======================================================================
2) Severity

Rating: Highly critical
Impact: System compromise
Where: Remote

======================================================================
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.

======================================================================
4) Solution

Set the kill-bit for the ActiveX control.

======================================================================
5) Time Table

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

======================================================================
6) Credits

Discovered by Carsten Eiram, Secunia Research.

======================================================================
7) References

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

======================================================================
8) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

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

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