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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