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                     Secunia Research 21/12/2008

    - Trend Micro HouseCall "notifyOnLoadNative()" Vulnerability -

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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 

* Trend Micro HouseCall ActiveX Control 6.51.0.1028 and 6.6.0.1278

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) Vendor's Description of Software 

"Trend Micro™ HouseCall is an application for checking whether your 
computer has been infected by viruses, spyware, or other malware. 
HouseCall performs additional security checks to identify and fix 
vulnerabilities to prevent reinfection."

Product Link:
http://housecall.trendmicro.com/ 

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Trend Micro 
HouseCall, which can be exploited by malicious people to compromise a 
user's system.

The vulnerability is caused by a use-after-free error in the HouseCall
ActiveX control (Housecall_ActiveX.dll). This can be exploited to 
dereference previously freed memory by tricking the user into opening 
a web page containing a specially crafted "notifyOnLoadNative()"
callback function.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Remove the ActiveX control and install version 6.6.0.1285.
http://prerelease.trendmicro-europe.com/hc66/launch/ 

HouseCall Server Edition:
Apply hot fix B1285.

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6) Time Table 

25/08/2008 - Vendor notified.
26/08/2008 - Vendor response.
21/12/2008 - Public disclosure.

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7) Credits 

Discovered by Alin Rad Pop, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2008-2435 for the vulnerability.

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9) About Secunia

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relevant to their specific system configuration:

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2008-34/ 

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

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