Secunia Research: Joomla! JCE Component Arbitrary File Upload Vulnerability

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                    Secunia Research 16/05/2012

     - Joomla! JCE Component Arbitrary File Upload 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

* Joomla! JCE Component version 2.0.21.

NOTE: Prior versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System Access
Where:  From remote

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3) Vendor's Description of Software 

"JCE makes creating and editing Joomla!® content easy

Add a set of tools to your Joomla!® environment that gives you the 
power to create the kind of content you want, without limitations, 
and without needing to know or learn HTML, XHTML, CSS."

Product Link:
http://www.joomlacontenteditor.net/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in the JCE component
for Joomla!, which can be exploited by malicious users to compromise
a vulnerable system.

An error due to the components/com_jce/editor/extensions/browser
/file.php script (when "chunk" is set to a value greater than "0") not 
properly verifying uploaded files can be exploited to execute arbitrary 
PHP code by uploading a PHP file with e.g. a ".jpg.pht" file extension.

Successful exploitation requires "Author" privileges.

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5) Solution 

Update to version 2.1.0.

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6) Time Table

03/05/2012 - Security contact requested.
03/05/2012 - Vendor provides security contact.
03/05/2012 - Vendor notified.
14/05/2012 - Vendor releases version 2.1.0.
16/05/2012 - Public disclosure.

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7) Credits 

Discovered by Jon Butler, Secunia.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has not 
currently 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
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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
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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/2012-15/

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

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