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e107 Avatar/Photograph Image File Upload Vulnerability



Secunia Research: e107 Avatar/Photograph Image File Upload Vulnerability
Secunia Research: e107 Avatar/Photograph Image File Upload Vulnerability



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                     Secunia Research 19/04/2010

     - e107 Avatar/Photograph Image 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 

* e107 version 0.7.19

NOTE: Other 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 

"e107 is a content management system written in PHP and using the
popular open source MySQL database system for content storage. It's
completely free, totally customisable and in constant development.".

Product Link:
http://e107.org/ 

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in e107, which can be
exploited by malicious users to compromise a vulnerable system.

An error exists in the handling of file uploads for avatar and
photograph images. This can be exploited to upload and execute 
arbitrary PHP code via a specially crafted image file with a 
".php.filetypesphp" extension.

Successful exploitation requires that "Public Uploads" are disabled 
(default), but uploads for avatar or photograph images for users are 
enabled, and a certain server configuration (e.g. an Apache server 
with the "mod_mime" module installed).

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5) Solution 

Update to version 0.7.20.

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6) Time Table 

18/03/2010 - Vendor notified.
18/03/2010 - Vendor response.
19/04/2010 - 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 assigned 
CVE-2010-0996 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/2010-44/ 

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

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