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                     Secunia Research 01/04/2009

    - UltraISO Image Name Parsing Format String 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 

* UltraISO 9.3.1.2633

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Less critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

"UltraISO is a powerful and easy-to-use utility that can extract,
create, edit, and convert CD/DVD image files. It can directly edit ISO
files, make images from CD/DVD-ROMs, or create new one from files and
folders on your computer.".

Product Link:
http://www.ezbsystems.com/ultraiso/index.html

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4) Description of Vulnerability

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

1) A format string error when handling DAA file names can be exploited
by tricking a user into opening a file with a specially crafted name 
containing format specifiers.

2) A format string error when handling ISZ file names can be exploited
by tricking a user into opening a file with a specially crafted name 
containing format specifiers.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Update to 9.3.3.2685.

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6) Time Table 

03/11/2008 - Vendor notified.
05/11/2008 - Vendor response with updated version for testing.
06/11/2008 - Vendor informed that both vulnerabilities are fixed.
31/03/2009 - Secunia notices that the latest version is not affected.
             Vendor contacted to receive confirmation that the
             reported vulnerabilities are fixed in released version.
31/03/2009 - The vendor confirms having fixed the vulnerabilities.
01/04/2009 - Public disclosure.

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7) Credits 

Discovered by Dyon Balding, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2008-3871 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/2008-48/

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

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