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Web Portal System Command Execution Vulnerability (wps_shop.cgi)
------------------------------------------------------------------------
SUMMARY
<http://webportalsystem.it/> WPS Web-Portal-System - "a CMS widely used
in Germany and Italy". An attacker may exploit a command execution
vulnerability in WPS by adding special parameters to it's wps_shop.cgi
script.
DETAILS
Vulnerable Systems:
* WPS Web-Portal-System version 0.7.0 (wps_shop.cgi)
Vulnerable code :
There is no filtering special character when open file in sub showartikel.
###########
sub showartikel {
###########
cartfooter();
open(DATA, "$shopcatsdir/$info{'cat'}/$info{'art'}");
lock(DATA);
......................................
......................................
}
Workaround:
For a fix, add:
$info{'art'} =~ s/[;\*\|'&\$!?#\(\)\[\]\{\}:'"\\]//go;
Before the following line:
open(DATA, "$shopcatsdir/$info{'cat'}/$info{'art'}");
}
Disclosure Timeline:
* Juni 2005 - bug found, Vendor website seem down and this hole not
comfirmed to vendor
* July 2005 - Public disclosure
ADDITIONAL INFORMATION
The information has been provided by <mailto:blahplok@yahoo.com>
blahplok.
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