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'Orbis CMS' Arbitrary Script Execution Vulnerability (CVE-2010-4313)
From: Mark Stanislav <mark.stanislav () gmail com>
Date: Mon, 29 Nov 2010 23:49:21 -0500

'Orbis CMS' Arbitrary Script Execution Vulnerability (CVE-2010-4313)
Mark Stanislav - mark.stanislav () gmail com


I. DESCRIPTION
---------------------------------------
A vulnerability exists in the 'Orbis CMS' fileman_file_upload.php script that allows any authenticated user to upload a 
PHP script and then run it without restriction.

 
II. TESTED VERSION
---------------------------------------
1.0.2 


III. PoC EXPLOIT
---------------------------------------
1) Login as any CMS user (administrator or non-administrator)
2) Upload your desired PHP script (e.g. cmd.php)
3) Navigate to http://www.example.com/orbis/uploads/cmd.php?cmd=cat%20/etc/passwd


IV. NOTES 
---------------------------------------
* This software is no longer developed according to the product page; it is still available for download though.
* Various other vulnerabilities exist in this code base (at least for previous versions); it's advisable not to use 
this software as patches are not coming.
* A vendor notice was not done for the aforementioned reasons.


V. SOLUTION
---------------------------------------
Overhaul the upload verification portion of fileman_file_upload.php completely.


VI. REFERENCES
---------------------------------------
http://www.novo-ws.com/orbis-cms/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4313
http://www.uncompiled.com/2010/11/orbis-cms-arbitrary-script-execution-vulnerability-cve-2010-4313/


VII. TIMELINE
---------------------------------------
11/30/2010: Public disclosure

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