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Secunia Research: RealPage Module Upload ActiveX Control Two Buffer Overflows

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                     Secunia Research 21/10/2010

   - RealPage Module Upload ActiveX Control Two Buffer Overflows -

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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 

* RealPage Module ActiveX Controls (Realpage.dll) 1.0.0.9

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 two vulnerabilities in the RealPage 
Upload ActiveX Control, which can be exploited by malicious people to 
compromise a user's system.

1) A boundary error when handling the "DestURL" property can be 
exploited to cause a stack-based buffer overflow by setting an overly 
long property value.

2) A boundary error when handling the "SourceFile" property can be 
exploited to cause a heap-based buffer overflow by setting an overly 
long property value.

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4) Solution 

Set the kill-bit for the affected ActiveX control.

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5) Time Table 

07/10/2010 - Vendor contacted to obtain security contact.
12/10/2010 - Vendor contacted (2nd attempt).
21/10/2010 - 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-2010-2585 for the vulnerabilities.

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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
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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/

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9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-119/

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

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