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                     Secunia Research 01/09/2011

         - InduSoft ISSymbol ActiveX Control Buffer Overflows -

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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 

* InduSoft ISSymbol ActiveX Control build 301.1104.601.0
* InduSoft Web Studio version 7.0B2 hotfix 7.0.01.04

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System access
Where:  Remote

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3) Vendor's Description of Software 

"InduSoft Web Studio is a powerful collection of automation tools that
provide all the automation building blocks to develop HMIs, SCADA 
systems and embedded instrumentation solutions. Utilize InduSoft 
integrated Web technologies to take advantage of Internet/intranet 
connectivity."

Link:
http://www.indusoft.com/indusoftart.php?catid=1&name=IWS/webstudio

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4) Description of Vulnerability

Secunia Research has discovered multiple vulnerabilities in InduSoft
ISSymbol ActiveX control, which can be exploited by malicious people 
to compromise a user's system.

1) A boundary error when processing the "Open()" method can be 
exploited to cause a heap-based buffer overflow via an overly long
string passed as a parameter.

2) A boundary error when processing the "Close()" method can be
exploited to cause a heap-based buffer overflow via an overly long
string passed as a parameter.

3) A boundary error when processing the "SetCurrentLanguage()" method
can be exploited to cause a stack-based buffer overflow via an overly
long string passed as a parameter.

Successful exploitation of the vulnerabilities allows execution of
arbitrary code.

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5) Solution 

Install Service Pack 1.

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6) Time Table 

09/06/2011 - Vendor notified
15/06/2011 - Vendor response.
30/08/2011 - Vendor releases a hotfix.
01/09/2011 - Public disclosure.

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7) Credits 

Discovered by Dmitriy Pletnev, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2011-0342 for the vulnerabilities.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2011-61/

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

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