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Secunia Research: VCDGear Cue File Parsing Buffer Overflow Vulnerabilities

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                     Secunia Research 16/05/2007

     - VCDGear Cue File Parsing Buffer Overflow Vulnerabilities -

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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 

* VCDGear 3.55

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

"VCDGear is a tool written to effortlessly extract MPEG streams from 
CD images, convert VideoCD files to MPEG, correct MPEG errors, create
(Super)VideoCDs and more!"

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

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4) Description of Vulnerability

Secunia Research has discovered two vulnerabilities in VCDGear, which
can be exploited by malicious people to compromise a user's system.

1) A boundary error when parsing tags in .CUE files can be exploited
to cause a stack-based buffer overflow via a specially crafted .CUE 
file containing an overly long tag.

2) A boundary error when processing "TRACK" information in .CUE files
can be exploited to cause a stack-based buffer overflow via a 
specially crafted .CUE file containing an overly long track type.

Successful exploitation allows execution of arbitrary code when a user
loads a malicious .CUE file.

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5) Solution 

Do not load untrusted .CUE files.

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6) Time Table 

04/05/2007 - Vendor notified.
14/05/2007 - Vendor notified again.
16/05/2007 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-2568 for the vulnerabilities.

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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://corporate.secunia.com/

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/

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://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/ 

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-51/

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

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