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                     Secunia Research 17/03/2010

         - Quicksilver Forums Backup Information Disclosure -

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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 

* Quicksilver Forums 1.4.2
* PowerDNS Administrator 1.1.8
* QSF Portal 1.4.5

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: Exposure of sensitive information
Where:  Remote

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3) Vendor's Description of Software 

"Quicksilver Forums is a fast, secure, powerful PHP/MySQL based forum
script.".

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

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4) Description of Vulnerability

Secunia Research has discovered a security issue in Quicksilver
Forums, which can be exploited by malicious people to disclose
potentially sensitive information.

The database backup functionality stores the database backup with a
semi-predictable file name inside the web root. This can be exploited
to download the backup by guessing the file name.

NOTE: Additionally, database backup files are changed to world read-
and writable access permissions.

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5) Solution 

Do not use the database backup functionality. Restrict access to
existing backup files.

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6) Time Table 

24/02/2010 - Vendor of QSF Portal and PowerDNS Administrator notified.
04/03/2010 - Vendor of QSF Portal and PowerDNS Administrator notified
             again.
10/03/2010 - Vendor of Quicksilver Forums notified.
12/03/2010 - Vendor of Quicksilver Forums responds.
17/03/2010 - Public disclosure.

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7) Credits 

Discovered by Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has not yet
assigned a CVE identifier 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/2010-39/ 

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

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