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Insecure Library Loading
Moderately critical

WordPress MU File Upload and Security Bypass

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Release Date:  2008-02-06    Last Update:  2008-12-30    Views:  9,284

Secunia Advisory SA28789

Where:

From remote

Impact:

Security Bypass, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Alexander Concha has reported a vulnerability in WordPress MU, which can be exploited by malicious users to bypass certain security restrictions and to compromise a vulnerable system.

The wp-admin/options.php script does not properly restrict changes to options. This can be exploited to e.g. upload and execute arbitrary PHP code.

Successful exploitation requires valid user credentials and having "manage_options" capabilities. Successful exploitation for file uploading also requires "upload_files" capabilities.

The vulnerability is reported in version 1.3.1. Prior versions may also be affected.


Solution:
Update to version 1.3.2 or later.

Provided and/or discovered by:
Alexander Concha

Original Advisory:
WordPress MU:
http://mu.wordpress.org/forums/topic.php?id=7534&page&replies=1

Alexander Concha:
http://www.buayacorp.com/files/wordpress/wordpress-mu-options-overwrite.html

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: WordPress MU File Upload and Security Bypass

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