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

'Orbis CMS' Arbitrary Script Execution Vulnerability (CVE-2010-4313)
Mark Stanislav - [email protected]

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