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Highly critical

TWiki Multiple File Extensions File Upload Vulnerability

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Release Date:  2006-07-10    Views:  12,708

Secunia Advisory SA20992

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A vulnerability has been reported in TWiki, which potentially can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to an error in the handling of file uploads where a filename has multiple file extensions. This can be exploited to upload malicious script files inside the pub directory (e.g. a PHP script).

Successful exploitation may allow execution of script code depending on the HTTP server configuration (it requires e.g. an Apache server with the "mod_mime" module installed).

The vulnerability has been reported in the following releases:
* TWikiRelease04x00x03
* TWikiRelease04x00x02
* TWikiRelease04x00x01
* TWikiRelease04x00x00
* TWikiRelease04Sep2004
* TWikiRelease03Sep2004
* TWikiRelease02Sep2004
* TWikiRelease01Sep2004
* TWikiRelease01Feb2003
* TWikiRelease01Dec2001
* TWikiRelease01Dec2000


Solution:
Apply patch (see original advisory).

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Tom McAdam.

Original Advisory:
http://twiki.org/cgi-bin/view/Codev/SecurityAlertSecureFileUploads

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: TWiki Multiple File Extensions File Upload Vulnerability

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