Conceptual PoC CVE-2024-44258: Symlink Vulnerability in iOS

Requirement: Python 3.7+ • License: MIT

⚠️ Warning: This repository contains a proof-of-concept (PoC) developed for exclusively educational and research purposes. It is not a fully functional exploit. Its use on devices without proper authorization is prohibited.

Table of Contents

1. Overview

2. Vulnerability Details

3. Scope and Limitations

4. PoC Features

5. Requirements

6. Implementation Guide

   • Clone the Repository
   • Critical Configuration
   • Execution
   • Theoretical Validation

7. Real Exploit: Main Challenges

8. Terms of Use and Disclaimer

9. License

10. Acknowledgments

Overview

This PoC conceptually illustrates CVE-2024-44258, a symlink resolution vulnerability during iOS backup restoration. The goal is to demonstrate the minimum configuration needed to exploit the flaw, without providing a full exploit.

Vulnerability Details

• CVE ID: CVE-2024-44258
• CWE: CWE-59 (Improper Link Resolution Before File Access)
• Affected Components: ManagedConfiguration framework and profiled daemon.
• Summary: The backup restoration process does not verify whether a path is a symlink, allowing file writes to arbitrary locations.
• Impact: Privilege escalation, modification of critical files, unauthorized access.
• Status (May 2025): Fixed in iOS 17.7.1, iOS 18.1, iPadOS 17.7.1, iPadOS 18.1, visionOS 2.1, tvOS 18.1 and later.
• Patch Date: October–November 2024
• Researchers: Hichem Maloufi, Christian Mina, Ismail Amzdak

Scope and Limitations

• Objective: Understand the internal mechanics of the vulnerability.
• Does not implement: Modification of the binary Manifest.mbdb file, a critical step for a real exploit.
• Result: Backup structure simulation and listing of theoretical operations.

PoC Features

1. Dependency check: Verifies availability of libimobiledevice.

2. Device detection: Waits for an iPhone connection and identifies its UDID.

3. Simulated backup generation:

   • Structure in CVE-2024-44258_PoC_Backup
   • Inserts a payload file (.plist) into HomeDomain/Library/ConfigurationProfiles/
   • Creates directories for SysSharedContainerDomain-systemgroup.com.apple.configurationprofiles
   • Marks the symlink in a placeholder file (Library -> SYMLINK_TARGET_ON_DEVICE)
   • Exports Manifest_OPERATIONS_SIMULATED.txt with conceptual steps

4. Restore attempt: Uses idevicebackup2 to apply the backup to the device.

Requirements

• Host system: macOS or Linux
• Python: ≥ 3.7
• Libraries: libimobiledevice (idevicelist, idevicebackup2 available in PATH)

Implementation Guide

Clone the Repository

git clone https://github.com/missaels235/POC-CVE-2024-44258-Py.git
cd POC-CVE-2024-44258-Py

Critical Configuration

In poc_cve_2024_44258.py, adjust:

• SYMLINK_TARGET_ON_DEVICE: Absolute path on iOS where the link will be created and the payload written.

  • Must be a path with write permissions.

  • Safe examples (sandbox):

    root@kitploit:~

    /private/var/mobile/Containers/Data/Application/<APP_UUID>/tmp/ExploitDir
    /private/var/mobile/Library/Caches/ExploitCache
    

⚠️ Caution: An inappropriate path may invalidate the PoC or, in a real exploit, affect system integrity.

Execution

python3 poc_cve_2024_44258.py

1. Checks dependencies.
2. Connects the iPhone.
3. Generates the simulated backup.
4. Asks for confirmation before restoring.

Theoretical Validation

If the restore process completes:

1. Access the device (jailbreak + SSH or Filza).
2. Verify the file PoC_File_CVE-2024-44258.plist at SYMLINK_TARGET_ON_DEVICE.
3. Confirm payload content.

Note: Without modifying Manifest.mbdb, validation is purely theoretical.

Real Exploit: Main Challenges

1. Analysis of Manifest.mbdb: Proprietary binary format.

2. Editing tools: Development in C or similar.

3. Construction of malicious backup:

   • Embed the .plist payload.
   • Define symlinks in Manifest.mbdb.

4. Automated restoration: The system creates symlinks and writes to the target path.

Terms of Use and Disclaimer

• Academic and forensic use only.
• No warranty: Code provided “as is”.
• High risk: Data loss or device brick.
• Legal compliance: Do not promote illegal activities.
• Full user responsibility.

License

Distributed under the MIT License. See the LICENSE file.

Acknowledgments

• Hichem Maloufi, Christian Mina, Ismail Amzdak — Vulnerability disclosure.
• libimobiledevice community — Essential tools.
• Author: Misael S. (@missaels235)