Secunia Research: NTR ActiveX Control Four Buffer Overflow Vulnerabilities

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                     Secunia Research 11/01/2012

    - NTR ActiveX Control Four Buffer Overflow Vulnerabilities -

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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 

* NTR ActiveX Control version 1.1.8.

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 four vulnerabilities in NTR ActiveX 
control, which can be exploited by malicious people to compromise a 
user's system.

1) A boundary error in the handling of the "StartModule()" method can 
be exploited to cause a stack-based buffer overflow via an overly long
"bstrUrl" parameter.

2) A boundary error when constructing an url can be exploited to cause 
a stack-based buffer overflow via e.g. an overly long, specially 
crafted "bstrParams" parameter passed to the "Check()" method.

3) A boundary error when constructing the path to a .ntr file can be 
exploited to cause a limited stack-based buffer overflow via an overly 
long, specially crafted "bstrUrl" parameter passed to the "Download()" 
or "DownloadModule()" methods.

4) A boundary error when constructing an url can be exploited to cause 
a stack-based buffer overflow via an overly long, specially crafted 
"bstrUrl" parameter passed to the "Download()" or "DownloadModule()" 
methods.

Successful exploitation of the vulnerabilities allows execution of 
arbitrary code.

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4) Solution 

Upgrade to version 2.0.4.8.

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5) Time Table 

25/07/2011 - Vendor notified.
25/07/2011 - Vendor response.
27/12/2011 - Vendor releases fixed version.
11/01/2012 - 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-2012-0266 for the vulnerabilities.

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8) About Secunia

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9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2012-1/

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

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