#2010-003 Free Simple CMS path sanitization errors

Description:

Free Simple CMS, an open source content management system, suffers from
remote file inclusion vulnerabilities.

Insufficient path sanitization on several query string parameters leads to
inclusion of arbitrary files from remote sources, this could be exploited to
execute arbitrary command or code.

The vulnerable URLs are similar to the one referenced in a previously
disclosed file inclusion vulnerability affecting the same version of the
software (see References). It has been discovered that 'body', 'footer',
'header', 'menu_left', 'menu_right' are also vulnerable to remote file
inclusion.

Affected version:

Free Simple CMS <= 1.0

Fixed version:

Free Simple CMS, N/A

Credit: vulnerability report received from Evan Pitstick, SecureWorks.

CVE: N/A

Timeline:

2010-08-20: vulnerability report received
2010-08-22: contacted freesimplecms maintainer
2010-08-24: maintainer replies, vulnerability report is provided
2010-09-13: due to lack of feedback oCERT asks reporter to disclose the
            issue
2010-09-14: reporter agrees to disclosure
2010-09-17: oCERT advisory published

References:
http://packetstormsecurity.org/1008-exploits/freesimplesoftware-rfi.txt
http://secunia.com/advisories/41001
http://osvdb.org/67329

Permalink:
http://www.ocert.org/advisories/ocert-2010-003.html

-- 
Andrea Barisani |                Founder & Project Coordinator
          oCERT | Open Source Computer Emergency Response Team

<lcars@ocert.org>                         http://www.ocert.org
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