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phpBB "avatar_path" PHP Code Execution Vulnerability

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Release Date:  2006-10-04    Last Update:  2007-01-05    Views:  21,443

Secunia Advisory SA22188

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


ShAnKaR has discovered a vulnerability in phpBB, which can be exploited by malicious users to compromise a vulnerable system.

Input passed to the "avatar_path" parameter in admin/admin_board.php is not properly sanitised before being used as a configuration variable to store avatar images. This can be exploited to upload and execute arbitrary PHP code by changing "avatar_path" to a file with a trailing NULL byte.

Successful exploitation requires privileges to the administration section.

The vulnerability has been confirmed in version 2.0.21. Prior versions may also be affected.


Solution:
Update to version 2.0.22.

Provided and/or discovered by:
ShAnKaR

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: phpBB "avatar_path" PHP Code Execution Vulnerability

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