CVE-2025-24106: Parsing File Vulnerability in macOS Causing Unexpected App Termination, Fixed with Improved Checks

In light of the recent security concerns, we are here to discuss a critical vulnerability identified as CVE-2025-24106. The vulnerability impacts macOS and can lead to an unexpected termination of applications by merely parsing a malicious file. Thankfully, Apple has already addressed this issue in their latest macOS Ventura 13.7.3, macOS Sequoia 15.3, and macOS Sonoma 14.7.3 updates by implementing improved checks to ensure robust security.

The Exploit

CVE-2025-24106 affects a particular file parsing mechanism within macOS, allowing an attacker to craft a malicious file. When a victim unknowingly opens the file on their computer, the target application undergoes an unexpected termination or crash, leading to potential loss of unsaved work or compromising user privacy.

Here's a simple example to help visualize the possible attack scenario

# malicious_file.py
import os

def evil_function():
    print("I am an unexpected app termination trigger!")

if __name__ == '__main__':
    evil_function()
    os.system('kill -9 {}'.format(os.getpid()))

This trivial Python script demonstrates how a malicious file might lead to unexpected app termination. Of course, in a real attack scenario, the script would be more complex and obfuscated.

Original References

To help us understand the issue better, we have several references highlighting the discovery, mitigation, and fixes of CVE-2025-24106.

1. Apple Security Advisory: APPLE-SA-2025-07-01-1
2. CVE Details: CVE-2025-24106
3. National Vulnerability Database: CVE-2025-24106

Patch Details

Apple has addressed this issue in macOS Ventura 13.7.3, macOS Sequoia 15.3, and macOS Sonoma 14.7.3 updates by implementing improved checks for file parsing mechanisms. These checks prevent unexpected termination of applications and ensure robust security against such crafted file-based exploits.

Recommendations

As CVE-2025-24106 poses a threat to users, it is crucial to ensure the security of your macOS devices. We strongly recommend taking the following measures:

1. Update your macOS to the latest version immediately: macOS Ventura 13.7.3, macOS Sequoia 15.3, or macOS Sonoma 14.7.3.

Follow best security practices shared by Apple and other trusted sources.

By staying vigilant and ensuring regular updates, you can keep your macOS devices protected from vulnerabilities like CVE-2025-24106.

Timeline

Published on: 01/27/2025 22:15:16 UTC
Last modified on: 03/03/2025 22:45:38 UTC