Orbis CMS 1.0.2 - Arbitrary File Upload

'Orbis CMS' Arbitrary Script Execution Vulnerability (CVE-2010-4313)

Mark Stanislav - mark.stanislav@gmail.com





I. DESCRIPTION

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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

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1.0.2 





III. PoC EXPLOIT

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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 

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* 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

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Overhaul the upload verification portion of fileman_file_upload.php completely.





VI. REFERENCES

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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

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11/30/2010: Public disclosure