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Secunia Research: Internet Download Manager FTP Buffer Overflow Vulnerability

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                     Secunia Research 30/04/2010

  - Internet Download Manager FTP Buffer Overflow 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 

* Internet Download Manager version 5.18

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 

"Internet Download Manager (IDM) is a tool to increase download speeds
by up to 5 times, resume and schedule downloads. Comprehensive error
recovery and resume capability will restart broken or interrupted 
downloads due to lost connections, network problems, computer 
shutdowns, or unexpected power outages.".

Product Link:
http://www.internetdownloadmanager.com/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Internet Download
Manager, which can be exploited by malicious people to compromise a 
user's system.

The vulnerability is caused by a boundary error when sending certain 
test sequences to an FTP server. This can be exploited to cause a 
stack-based buffer overflow by e.g. tricking a user into downloading 
a file from a specially crafted FTP URI.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Update to version 5.19.

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6) Time Table 

16/04/2010 - Vendor notified.
22/04/2010 - Vendor response.
27/04/2010 - Vendor releases fixed version.
30/04/2010 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-0995 for the vulnerability.

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9) 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/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-62/

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

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